[rkward] rkward/plugins: batch of typos

m.eik michalke meik.michalke at uni-duesseldorf.de
Tue Oct 6 21:22:57 UTC 2015


Git commit cb4987149b6c38f0529442a63d2ef343c8d3be43 by m.eik michalke.
Committed on 06/10/2015 at 18:04.
Pushed by meikm into branch 'master'.

batch of typos

  - in many plugins <varslot> nodes had the attribute "type" which should actually be "types"

M  +1    -1    rkward/plugins/analysis/TESTS/PP_test.xml
M  +2    -2    rkward/plugins/analysis/TESTS/mood_test.xml
M  +2    -2    rkward/plugins/analysis/ansari_bradley/ansari_bradley_exact_test.xml
M  +2    -2    rkward/plugins/analysis/ansari_bradley/ansari_bradley_test.xml
M  +1    -1    rkward/plugins/analysis/corr_matrix.xml
M  +3    -3    rkward/plugins/analysis/irt/dichotomous/par_est_2pl.xml
M  +3    -3    rkward/plugins/analysis/irt/dichotomous/par_est_3pl.xml
M  +4    -4    rkward/plugins/analysis/irt/dichotomous/par_est_lltm.xml
M  +3    -3    rkward/plugins/analysis/irt/dichotomous/par_est_rasch.xml
M  +3    -3    rkward/plugins/analysis/irt/polytomous/par_est_gpcm.xml
M  +2    -2    rkward/plugins/analysis/irt/polytomous/par_est_grm.xml
M  +4    -4    rkward/plugins/analysis/irt/polytomous/par_est_lpcm.xml
M  +4    -4    rkward/plugins/analysis/irt/polytomous/par_est_lrsm.xml
M  +3    -3    rkward/plugins/analysis/irt/polytomous/par_est_pcm.xml
M  +3    -3    rkward/plugins/analysis/irt/polytomous/par_est_rsm.xml
M  +2    -2    rkward/plugins/analysis/irt/tests/eRm_waldtest.xml
M  +2    -2    rkward/plugins/analysis/irt/tests/ltm_cronbach_alpha.xml
M  +1    -1    rkward/plugins/analysis/irt/tests/ltm_gof_rasch.xml
M  +1    -1    rkward/plugins/analysis/irt/tests/ltm_item_fit.xml
M  +2    -2    rkward/plugins/analysis/irt/tests/ltm_person_fit.xml
M  +1    -1    rkward/plugins/analysis/irt/tests/ltm_unidimensional.xml
M  +1    -1    rkward/plugins/analysis/moments/agostino_test.xml
M  +1    -1    rkward/plugins/analysis/moments/anscombe_test.xml
M  +1    -1    rkward/plugins/analysis/moments/bonett_test.xml
M  +1    -1    rkward/plugins/analysis/moments/moment.xml
M  +1    -1    rkward/plugins/analysis/moments/skewness_kurtosis_test.xml
M  +1    -1    rkward/plugins/analysis/outliers/chisq_out_test.xml
M  +1    -1    rkward/plugins/analysis/outliers/dixon_test.xml
M  +1    -1    rkward/plugins/analysis/outliers/grubbs_test.xml
M  +1    -1    rkward/plugins/analysis/outliers/outlier.xml
M  +2    -2    rkward/plugins/analysis/regression/linear_regression.xml
M  +1    -1    rkward/plugins/analysis/time_series/Box_test.xml
M  +1    -1    rkward/plugins/analysis/time_series/kpss_test.xml
M  +2    -2    rkward/plugins/analysis/variances/F_test.xml
M  +1    -1    rkward/plugins/analysis/variances/bartlett_test.xml
M  +1    -1    rkward/plugins/analysis/variances/fligner_test.xml
M  +2    -2    rkward/plugins/analysis/variances/levene_test.xml
M  +1    -1    rkward/plugins/distributions/tests/ad_test.xml
M  +1    -1    rkward/plugins/distributions/tests/cvm_test.xml
M  +1    -1    rkward/plugins/distributions/tests/jb_test.xml
M  +1    -1    rkward/plugins/distributions/tests/lillie_test.xml
M  +1    -1    rkward/plugins/distributions/tests/pearson_test.xml
M  +1    -1    rkward/plugins/distributions/tests/sf_test.xml
M  +1    -1    rkward/plugins/distributions/tests/shapiro_test.xml
M  +1    -1    rkward/plugins/plots/box_plot.xml
M  +1    -1    rkward/plugins/plots/cor_graph.xml
M  +1    -1    rkward/plugins/plots/irt/dichotomous/plot_ltm.xml
M  +1    -1    rkward/plugins/plots/irt/dichotomous/plot_rasch.xml
M  +1    -1    rkward/plugins/plots/irt/dichotomous/plot_tpm.xml
M  +1    -1    rkward/plugins/plots/irt/polytomous/plot_grm.xml
M  +1    -1    rkward/plugins/plots/irt/polytomous/plot_pcm.xml
M  +1    -1    rkward/plugins/plots/irt/polytomous/plot_rsm.xml
M  +2    -2    rkward/plugins/plots/irt/tests/eRm_plotLR.xml
M  +1    -1    rkward/plugins/plots/scatterplot_matrix.xml
M  +1    -1    rkward/plugins/plots/stem.xml
M  +2    -2    rkward/plugins/simple_anova/description.xml
M  +2    -2    rkward/plugins/testing/optionset.xml
M  +2    -2    rkward/plugins/testing/test1.xml
M  +2    -2    rkward/plugins/testing/test2.xml

http://commits.kde.org/rkward/cb4987149b6c38f0529442a63d2ef343c8d3be43

diff --git a/rkward/plugins/analysis/TESTS/PP_test.xml b/rkward/plugins/analysis/TESTS/PP_test.xml
index f8cd3fc..631aa22 100755
--- a/rkward/plugins/analysis/TESTS/PP_test.xml
+++ b/rkward/plugins/analysis/TESTS/PP_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<radio id="lshort" label="version of truncation lag parameter">
 							<option label="short" value="TRUE"/>
 							<option label="long" value="FALSE"/>
diff --git a/rkward/plugins/analysis/TESTS/mood_test.xml b/rkward/plugins/analysis/TESTS/mood_test.xml
index 6e34f6f..d635030 100644
--- a/rkward/plugins/analysis/TESTS/mood_test.xml
+++ b/rkward/plugins/analysis/TESTS/mood_test.xml
@@ -7,8 +7,8 @@
 		<row>
 			<varselector id="vars"/>
 			<column>
-				<varslot type="numeric" id="x" source="vars" required="true" label="compare"/>
-				<varslot type="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
+				<varslot types="numeric" id="x" source="vars" required="true" label="compare"/>
+				<varslot types="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
 				<radio id="alternative" label="using test hypothesis">
 					<option value="two.sided" label="Two-sided"/>
 					<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/ansari_bradley/ansari_bradley_exact_test.xml b/rkward/plugins/analysis/ansari_bradley/ansari_bradley_exact_test.xml
index 547aee1..3bf7777 100644
--- a/rkward/plugins/analysis/ansari_bradley/ansari_bradley_exact_test.xml
+++ b/rkward/plugins/analysis/ansari_bradley/ansari_bradley_exact_test.xml
@@ -13,8 +13,8 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" source="vars" required="true" label="compare"/>
-						<varslot type="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
+						<varslot types="numeric" id="x" source="vars" required="true" label="compare"/>
+						<varslot types="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
 						<radio id="alternative" label="using test hypothesis">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/ansari_bradley/ansari_bradley_test.xml b/rkward/plugins/analysis/ansari_bradley/ansari_bradley_test.xml
index 67577de..e0d88e2 100644
--- a/rkward/plugins/analysis/ansari_bradley/ansari_bradley_test.xml
+++ b/rkward/plugins/analysis/ansari_bradley/ansari_bradley_test.xml
@@ -13,8 +13,8 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" source="vars" required="true" label="compare"/>
-						<varslot type="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
+						<varslot types="numeric" id="x" source="vars" required="true" label="compare"/>
+						<varslot types="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
 						<radio id="alternative" label="using test hypothesis">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/corr_matrix.xml b/rkward/plugins/analysis/corr_matrix.xml
index 0a62de4..f127797 100644
--- a/rkward/plugins/analysis/corr_matrix.xml
+++ b/rkward/plugins/analysis/corr_matrix.xml
@@ -16,7 +16,7 @@
 			<tab id="tab_variables" label="Variables">
 				<row>
 					<varselector id="vars"/>
-					<varslot type="numeric" min_vars="2" multi="true" id="x" source="vars" required="true" label="variable(s):" num_dimensions="1"/>
+					<varslot types="numeric" min_vars="2" multi="true" id="x" source="vars" required="true" label="variable(s):" num_dimensions="1"/>
 				</row>
 			</tab>
 			<tab label="Options" id="tab_Options">
diff --git a/rkward/plugins/analysis/irt/dichotomous/par_est_2pl.xml b/rkward/plugins/analysis/irt/dichotomous/par_est_2pl.xml
index d419220..4e8fcb0 100644
--- a/rkward/plugins/analysis/irt/dichotomous/par_est_2pl.xml
+++ b/rkward/plugins/analysis/irt/dichotomous/par_est_2pl.xml
@@ -16,7 +16,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.2pl"/>
           </column>
@@ -27,7 +27,7 @@
           <varselector id="vars2" />
           <column id="opt_var_col">
             <frame id="frame_constraints" label="Should parameters be fixed (constraints)?">
-              <varslot type="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
+              <varslot types="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
             </frame>
             <stretch />
             <radio label="Start values" id="startval">
@@ -35,7 +35,7 @@
               <option label="Use random start values" value="random" />
               <option label="Use own matrix of start values" value="matrix" />
             </radio>
-            <varslot type="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
+            <varslot types="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
             <frame label="Misc options">
               <checkbox id="naaction" label="Use only complete cases" value="na.exclude" />
               <checkbox id="irtparam" label="Usual IRT parameterization" checked="true" value="TRUE" />
diff --git a/rkward/plugins/analysis/irt/dichotomous/par_est_3pl.xml b/rkward/plugins/analysis/irt/dichotomous/par_est_3pl.xml
index e7aa0cb..13ed12c 100644
--- a/rkward/plugins/analysis/irt/dichotomous/par_est_3pl.xml
+++ b/rkward/plugins/analysis/irt/dichotomous/par_est_3pl.xml
@@ -18,7 +18,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.3pl"/>
           </column>
@@ -29,7 +29,7 @@
           <varselector id="vars2" />
           <column id="opt_var_col">
             <frame id="frame_constraints" label="Should parameters be fixed (constraints)?">
-              <varslot type="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
+              <varslot types="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
             </frame>
             <spinbox id="maxguess" label="Upper bound for guessing parameter" type="real" initial="1" min="0" max="1" size="small" />
             <stretch />
@@ -38,7 +38,7 @@
               <option label="Use random start values" value="random" />
               <option label="Use own matrix of start values" value="matrix" />
             </radio>
-            <varslot type="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
+            <varslot types="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
             <frame label="Misc options">
               <checkbox id="type" label="Assume equal discrimination parameters" value="rasch" />
               <checkbox id="naaction" label="Use only complete cases" value="na.exclude" />
diff --git a/rkward/plugins/analysis/irt/dichotomous/par_est_lltm.xml b/rkward/plugins/analysis/irt/dichotomous/par_est_lltm.xml
index 2c31822..1493518 100644
--- a/rkward/plugins/analysis/irt/dichotomous/par_est_lltm.xml
+++ b/rkward/plugins/analysis/irt/dichotomous/par_est_lltm.xml
@@ -22,14 +22,14 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <spinbox id="mpoints" label="Number of measurement points" type="integer" initial="1" min="1" size="small" />
             <stretch />
             <radio label="Group contrasts" id="groups">
               <option label="All subjects belong to one group" value="1" checked="true" />
               <option label="Compute group contrasts" value="contrasts" />
             </radio>
-            <varslot type="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
+            <varslot types="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.lltm"/>
           </column>
         </row>
@@ -42,13 +42,13 @@
               <option label="Compute automatically" value="auto" checked="true" />
               <option label="Use own design matrix" value="matrix" />
             </radio>
-            <varslot type="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
+            <varslot types="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
             <stretch />
             <radio label="Eta start values" id="etastart">
               <option label="Use 0-vector" value="NULL" checked="true" />
               <option label="Use own vector of eta start values" value="startval" />
             </radio>
-            <varslot type="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
+            <varslot types="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
             <frame label="Misc options">
               <checkbox id="stderr" label="Compute standard error" checked="true" value="se" />
               <checkbox id="sumnull" label="Normalize parameters to sum-0" checked="true" value="sum0" />
diff --git a/rkward/plugins/analysis/irt/dichotomous/par_est_rasch.xml b/rkward/plugins/analysis/irt/dichotomous/par_est_rasch.xml
index b21019a..e638120 100644
--- a/rkward/plugins/analysis/irt/dichotomous/par_est_rasch.xml
+++ b/rkward/plugins/analysis/irt/dichotomous/par_est_rasch.xml
@@ -16,7 +16,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.rasch"/>
           </column>
@@ -27,7 +27,7 @@
           <varselector id="vars2" />
           <column id="opt_var_col">
             <frame id="frame_constraints" label="Should parameters be fixed (constraints)?">
-              <varslot type="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
+              <varslot types="numeric" id="constraint" classes="data.frame matrix" source="vars2" label="Constraint matrix:"/>
             </frame>
             <stretch />
             <radio label="Start values" id="startval">
@@ -35,7 +35,7 @@
               <option label="Use random start values" value="random" />
               <option label="Use own matrix of start values" value="matrix" />
             </radio>
-            <varslot type="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
+            <varslot types="numeric" id="startval_mtx" classes="data.frame matrix" source="vars2" label="Matrix of start values:"/>
             <frame label="Misc options">
               <checkbox id="naaction" label="Use only complete cases" value="na.exclude" />
               <checkbox id="irtparam" label="Usual IRT parameterization" checked="true" value="TRUE" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_gpcm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_gpcm.xml
index 8deb76c..f27fa29 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_gpcm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_gpcm.xml
@@ -20,10 +20,10 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <frame id="frame_items" label="Item selection">
 	      <checkbox id="chk_select" label="Select a subset of items" value="select" />
-	      <varslot type="numeric" id="inp_items" source="vars" multi="true" min_vars="2" label="List of items:" />
+	      <varslot types="numeric" id="inp_items" source="vars" multi="true" min_vars="2" label="List of items:" />
             </frame>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.gpcm"/>
@@ -45,7 +45,7 @@
               <option label="Use random start values" value="random" />
               <option label="Use own list of start values" value="list" />
             </radio>
-            <varslot type="numeric" id="startval_lst" source="vars2" label="List of start values:"/>
+            <varslot types="numeric" id="startval_lst" source="vars2" label="List of start values:"/>
             <frame label="Misc options">
               <checkbox id="naaction" label="Use only complete cases" value="na.exclude" />
               <checkbox id="irtparam" label="Usual IRT parameterization" checked="true" value="TRUE" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_grm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_grm.xml
index dd91e8c..86b6235 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_grm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_grm.xml
@@ -16,7 +16,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.grm"/>
           </column>
@@ -35,7 +35,7 @@
               <option label="Use random start values" value="random" />
               <option label="Use own list of start values" value="list" />
             </radio>
-            <varslot type="numeric" id="startval_lst" source="vars2" label="List of start values:"/>
+            <varslot types="numeric" id="startval_lst" source="vars2" label="List of start values:"/>
             <frame label="Misc options">
               <checkbox id="hessian" label="Compute Hessian matrix" value="hessian" />
               <checkbox id="naaction" label="Use only complete cases" value="na.exclude" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_lpcm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_lpcm.xml
index 8738427..f9137c3 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_lpcm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_lpcm.xml
@@ -22,14 +22,14 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <spinbox id="mpoints" label="Number of measurement points" type="integer" initial="1" min="1" size="small" />
             <stretch />
             <radio label="Group contrasts" id="groups">
               <option label="All subjects belong to one group" value="1" checked="true" />
               <option label="Compute group contrasts" value="contrasts" />
             </radio>
-            <varslot type="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
+            <varslot types="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.lpcm"/>
           </column>
         </row>
@@ -42,13 +42,13 @@
               <option label="Compute automatically" value="auto" checked="true" />
               <option label="Use own design matrix" value="matrix" />
             </radio>
-            <varslot type="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
+            <varslot types="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
             <stretch />
             <radio label="Eta start values" id="etastart">
               <option label="Use 0-vector" value="NULL" checked="true" />
               <option label="Use own vector of eta start values" value="startval" />
             </radio>
-            <varslot type="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
+            <varslot types="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
             <frame label="Misc options">
               <checkbox id="stderr" label="Compute standard error" checked="true" value="se" />
               <checkbox id="sumnull" label="Normalize parameters to sum-0" checked="true" value="sum0" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_lrsm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_lrsm.xml
index 8198f1b..8caaecc 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_lrsm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_lrsm.xml
@@ -25,14 +25,14 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <spinbox id="mpoints" label="Number of measurement points" type="integer" initial="1" min="1" size="small" />
             <stretch />
             <radio label="Group contrasts" id="groups">
               <option label="All subjects belong to one group" value="1" checked="true" />
               <option label="Compute group contrasts" value="contrasts" />
             </radio>
-            <varslot type="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
+            <varslot types="numeric" id="group_vec" source="vars" label="Use this group vector:"/>
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.lrsm"/>
           </column>
         </row>
@@ -45,13 +45,13 @@
               <option label="Compute automatically" value="auto" checked="true" />
               <option label="Use own design matrix" value="matrix" />
             </radio>
-            <varslot type="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
+            <varslot types="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
             <stretch />
             <radio label="Eta start values" id="etastart">
               <option label="Use 0-vector" value="NULL" checked="true" />
               <option label="Use own vector of eta start values" value="startval" />
             </radio>
-            <varslot type="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
+            <varslot types="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
             <frame label="Misc options">
               <checkbox id="stderr" label="Compute standard error" checked="true" value="se" />
               <checkbox id="sumnull" label="Normalize parameters to sum-0" checked="true" value="sum0" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_pcm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_pcm.xml
index 8b4001c..183803f 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_pcm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_pcm.xml
@@ -22,7 +22,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.pcm"/>
           </column>
@@ -36,13 +36,13 @@
               <option label="Compute automatically" value="auto" checked="true" />
               <option label="Use own design matrix" value="matrix" />
             </radio>
-            <varslot type="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
+            <varslot types="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
             <stretch />
             <radio label="Eta start values" id="etastart">
               <option label="Use 0-vector" value="NULL" checked="true" />
               <option label="Use own vector of eta start values" value="startval" />
             </radio>
-            <varslot type="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
+            <varslot types="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
             <frame label="Misc options">
               <checkbox id="stderr" label="Compute standard error" checked="true" value="se" />
               <checkbox id="sumnull" label="Normalize parameters to sum-0" checked="true" value="sum0" />
diff --git a/rkward/plugins/analysis/irt/polytomous/par_est_rsm.xml b/rkward/plugins/analysis/irt/polytomous/par_est_rsm.xml
index 04ce12c..fd0ae0c 100644
--- a/rkward/plugins/analysis/irt/polytomous/par_est_rsm.xml
+++ b/rkward/plugins/analysis/irt/polytomous/par_est_rsm.xml
@@ -22,7 +22,7 @@
         <row id="manifest_resp_row">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
+            <varslot types="numeric" id="x" classes="data.frame matrix" source="vars" required="true" label="Matrix of manifest variables:"/>
             <stretch />
             <saveobject id="save_name" checkable="true" checked="true" label="Save results in workspace" initial="estimates.rsm"/>
           </column>
@@ -36,13 +36,13 @@
               <option label="Compute automatically" value="auto" checked="true" />
               <option label="Use own design matrix" value="matrix" />
             </radio>
-            <varslot type="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
+            <varslot types="numeric" id="design_mtx" classes="data.frame matrix" source="vars2" label="Design matrix:"/>
             <stretch />
             <radio label="Eta start values" id="etastart">
               <option label="Use 0-vector" value="NULL" checked="true" />
               <option label="Use own vector of eta start values" value="startval" />
             </radio>
-            <varslot type="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
+            <varslot types="numeric" id="etastart_vec" source="vars2" label="Vector of start values:"/>
             <frame label="Misc options">
               <checkbox id="stderr" label="Compute standard error" checked="true" value="se" />
               <checkbox id="sumnull" label="Normalize parameters to sum-0" checked="true" value="sum0" />
diff --git a/rkward/plugins/analysis/irt/tests/eRm_waldtest.xml b/rkward/plugins/analysis/irt/tests/eRm_waldtest.xml
index ca2eb52..2a7a3c0 100644
--- a/rkward/plugins/analysis/irt/tests/eRm_waldtest.xml
+++ b/rkward/plugins/analysis/irt/tests/eRm_waldtest.xml
@@ -17,7 +17,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to test:"/>
+            <varslot types="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to test:"/>
             <text>Only objects of class Rm are valid!</text>
             <stretch />
           </column>
@@ -32,7 +32,7 @@
               <option label="Mean" value="mean" />
               <option label="Use dichotomous vector to define groups" value="vector" />
             </radio>
-            <varslot type="numeric" id="splitvector" source="vars2" label="Select grouping vector:"/>
+            <varslot types="numeric" id="splitvector" source="vars2" label="Select grouping vector:"/>
             <frame id="optimizer" label="Optimizer">
             <dropdown  id="drop_optimizer" label="Used optimizer:">
 	      <option label="nlm()" value="nlm" checked="true" />
diff --git a/rkward/plugins/analysis/irt/tests/ltm_cronbach_alpha.xml b/rkward/plugins/analysis/irt/tests/ltm_cronbach_alpha.xml
index 09f1dc9..62258cd 100644
--- a/rkward/plugins/analysis/irt/tests/ltm_cronbach_alpha.xml
+++ b/rkward/plugins/analysis/irt/tests/ltm_cronbach_alpha.xml
@@ -14,11 +14,11 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" source="vars" required="true" num_dimensions="2" label="Item responses:"/>
+            <varslot types="numeric" id="x" source="vars" required="true" num_dimensions="2" label="Item responses:"/>
             <text>Must be a matrix or data.frame, including the items as columns.</text>
             <frame id="frame_items" label="Item selection">
 	      <checkbox id="chk_select" label="Select a subset of items" value="select" />
-	      <varslot type="numeric" id="inp_items" source="vars" multi="true" min_vars="2" label="List of items:" />
+	      <varslot types="numeric" id="inp_items" source="vars" multi="true" min_vars="2" label="List of items:" />
             </frame>
             <stretch />
             <frame id="frame_options" label="Options">
diff --git a/rkward/plugins/analysis/irt/tests/ltm_gof_rasch.xml b/rkward/plugins/analysis/irt/tests/ltm_gof_rasch.xml
index 7ab3e79..058bb47 100644
--- a/rkward/plugins/analysis/irt/tests/ltm_gof_rasch.xml
+++ b/rkward/plugins/analysis/irt/tests/ltm_gof_rasch.xml
@@ -12,7 +12,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="rasch" source="vars" required="true" label="Choose fitted model to examine:"/>
+            <varslot types="numeric" id="x" classes="rasch" source="vars" required="true" label="Choose fitted model to examine:"/>
             <text>Only objects of class rasch are valid!</text>
             <stretch />
             <frame label="Bootstrap options">
diff --git a/rkward/plugins/analysis/irt/tests/ltm_item_fit.xml b/rkward/plugins/analysis/irt/tests/ltm_item_fit.xml
index 674d892..6d73839 100644
--- a/rkward/plugins/analysis/irt/tests/ltm_item_fit.xml
+++ b/rkward/plugins/analysis/irt/tests/ltm_item_fit.xml
@@ -15,7 +15,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="rasch tpm ltm" source="vars" required="true" label="Choose fitted model to examine:"/>
+            <varslot types="numeric" id="x" classes="rasch tpm ltm" source="vars" required="true" label="Choose fitted model to examine:"/>
             <text>Only objects of class ltm, rasch and tpm are valid!</text>
             <stretch />
           </column>
diff --git a/rkward/plugins/analysis/irt/tests/ltm_person_fit.xml b/rkward/plugins/analysis/irt/tests/ltm_person_fit.xml
index 6180463..d27d106 100644
--- a/rkward/plugins/analysis/irt/tests/ltm_person_fit.xml
+++ b/rkward/plugins/analysis/irt/tests/ltm_person_fit.xml
@@ -18,7 +18,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="rasch tpm ltm" source="vars" required="true" label="Choose fitted model to examine:"/>
+            <varslot types="numeric" id="x" classes="rasch tpm ltm" source="vars" required="true" label="Choose fitted model to examine:"/>
             <text>Only objects of class ltm, rasch and tpm are valid!</text>
             <stretch />
             <radio id="rad_hypot" label="Alternative hypothesis to test">
@@ -37,7 +37,7 @@
               <option label="Compute for observed response pattern" value="observed" checked="true" />
               <option label="Compute for given response pattern" value="resp_matrix" />
             </radio>
-            <varslot type="numeric" id="mtx_resppat" source="vars2" label="Select matrix or data.frame with pattern to use:"/>
+            <varslot types="numeric" id="mtx_resppat" source="vars2" label="Select matrix or data.frame with pattern to use:"/>
             <radio id="rad_pvalue" label="p value assumptions">
               <option label="Assume standard normal distribution" value="normal" checked="true" />
               <option label="Use Monte Carlo procedure to approximate distribution" value="montecarlo" />
diff --git a/rkward/plugins/analysis/irt/tests/ltm_unidimensional.xml b/rkward/plugins/analysis/irt/tests/ltm_unidimensional.xml
index c92c24d..f685a4c 100644
--- a/rkward/plugins/analysis/irt/tests/ltm_unidimensional.xml
+++ b/rkward/plugins/analysis/irt/tests/ltm_unidimensional.xml
@@ -14,7 +14,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="rasch ltm tpm" source="vars" required="true" label="Choose fitted model to check:"/>
+            <varslot types="numeric" id="x" classes="rasch ltm tpm" source="vars" required="true" label="Choose fitted model to check:"/>
             <text>Only objects of class rasch, ltm or tpm are valid!</text>
             <stretch />
             <frame id="frame_options" label="Monte Carlo options">
diff --git a/rkward/plugins/analysis/moments/agostino_test.xml b/rkward/plugins/analysis/moments/agostino_test.xml
index d56f075..8947361 100755
--- a/rkward/plugins/analysis/moments/agostino_test.xml
+++ b/rkward/plugins/analysis/moments/agostino_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<radio id="alternative" label="Test hypothesis (H1)">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/moments/anscombe_test.xml b/rkward/plugins/analysis/moments/anscombe_test.xml
index b438ed1..45be12d 100644
--- a/rkward/plugins/analysis/moments/anscombe_test.xml
+++ b/rkward/plugins/analysis/moments/anscombe_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<radio id="alternative" label="Test hypothesis (H1)">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/moments/bonett_test.xml b/rkward/plugins/analysis/moments/bonett_test.xml
index a8a5880..52ecfde 100644
--- a/rkward/plugins/analysis/moments/bonett_test.xml
+++ b/rkward/plugins/analysis/moments/bonett_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<radio id="alternative" label="Test hypothesis (H1)">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/moments/moment.xml b/rkward/plugins/analysis/moments/moment.xml
index c4b61e8..2940c3c 100644
--- a/rkward/plugins/analysis/moments/moment.xml
+++ b/rkward/plugins/analysis/moments/moment.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/analysis/moments/skewness_kurtosis_test.xml b/rkward/plugins/analysis/moments/skewness_kurtosis_test.xml
index d6fc417..83a9cd3 100755
--- a/rkward/plugins/analysis/moments/skewness_kurtosis_test.xml
+++ b/rkward/plugins/analysis/moments/skewness_kurtosis_test.xml
@@ -11,7 +11,7 @@
 					</column>
 					<column>
 						<frame>
-							<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
+							<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
 						</frame>
 						<stretch/>
 					</column>
diff --git a/rkward/plugins/analysis/outliers/chisq_out_test.xml b/rkward/plugins/analysis/outliers/chisq_out_test.xml
index 880a2ed..594c892 100755
--- a/rkward/plugins/analysis/outliers/chisq_out_test.xml
+++ b/rkward/plugins/analysis/outliers/chisq_out_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/analysis/outliers/dixon_test.xml b/rkward/plugins/analysis/outliers/dixon_test.xml
index 09724d4..fee77bd 100755
--- a/rkward/plugins/analysis/outliers/dixon_test.xml
+++ b/rkward/plugins/analysis/outliers/dixon_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/analysis/outliers/grubbs_test.xml b/rkward/plugins/analysis/outliers/grubbs_test.xml
index 0858dee..e36af8f 100755
--- a/rkward/plugins/analysis/outliers/grubbs_test.xml
+++ b/rkward/plugins/analysis/outliers/grubbs_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/analysis/outliers/outlier.xml b/rkward/plugins/analysis/outliers/outlier.xml
index 2d9ff7d..4acfdf5 100755
--- a/rkward/plugins/analysis/outliers/outlier.xml
+++ b/rkward/plugins/analysis/outliers/outlier.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/analysis/regression/linear_regression.xml b/rkward/plugins/analysis/regression/linear_regression.xml
index 691abdc..cb09d54 100644
--- a/rkward/plugins/analysis/regression/linear_regression.xml
+++ b/rkward/plugins/analysis/regression/linear_regression.xml
@@ -8,8 +8,8 @@
 			<row>
 				<varselector id="vars"/>
 				<column>
-					<varslot type="numeric" id="y" source="vars" required="true" label="dependent variable"/>
-					<varslot type="numeric" id="x" source="vars" required="true" multi="true" label="independent variables"/>
+					<varslot types="numeric" id="y" source="vars" required="true" label="dependent variable"/>
+					<varslot types="numeric" id="x" source="vars" required="true" multi="true" label="independent variables"/>
 					<checkbox id="intercept" label="include intercept" checked="true"/>
 					<stretch/>
 				</column>
diff --git a/rkward/plugins/analysis/time_series/Box_test.xml b/rkward/plugins/analysis/time_series/Box_test.xml
index 4af4919..070d07f 100755
--- a/rkward/plugins/analysis/time_series/Box_test.xml
+++ b/rkward/plugins/analysis/time_series/Box_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<spinbox type="integer" label="lag" id="lag" min="0" initial="1" max="99" />
 						<frame label="Type of test">
 							<radio id="type" label="test to be performed">
diff --git a/rkward/plugins/analysis/time_series/kpss_test.xml b/rkward/plugins/analysis/time_series/kpss_test.xml
index 19ae687..adff8ed 100755
--- a/rkward/plugins/analysis/time_series/kpss_test.xml
+++ b/rkward/plugins/analysis/time_series/kpss_test.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" id="x" multi="true" source="vars" required="true" label="variable(s):"/>
 						<radio id="null" label="null hypothesis">
 							<option label="Level" value="Level"/>
 							<option label="Trend" value="Trend"/>
diff --git a/rkward/plugins/analysis/variances/F_test.xml b/rkward/plugins/analysis/variances/F_test.xml
index c853ed6..2fbc418 100644
--- a/rkward/plugins/analysis/variances/F_test.xml
+++ b/rkward/plugins/analysis/variances/F_test.xml
@@ -9,8 +9,8 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" source="vars" required="true" label="compare"/>
-						<varslot type="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
+						<varslot types="numeric" id="x" source="vars" required="true" label="compare"/>
+						<varslot types="numeric" id="y" source="vars" required="true" label="against" i18n_context="compare against"/>
 						<radio id="alternative" label="using test hypothesis">
 							<option value="two.sided" label="Two-sided"/>
 							<option value="greater" label="greater"/>
diff --git a/rkward/plugins/analysis/variances/bartlett_test.xml b/rkward/plugins/analysis/variances/bartlett_test.xml
index 4eb2835..ceb0245 100644
--- a/rkward/plugins/analysis/variances/bartlett_test.xml
+++ b/rkward/plugins/analysis/variances/bartlett_test.xml
@@ -7,7 +7,7 @@
 		<row>
 			<varselector id="vars"/>
 			<column>
-				<varslot type="numeric" id="x" source="vars" required="true" label="samples" multi="true" min_vars="2"/>
+				<varslot types="numeric" id="x" source="vars" required="true" label="samples" multi="true" min_vars="2"/>
 			</column>
 		</row>
 	</dialog>
diff --git a/rkward/plugins/analysis/variances/fligner_test.xml b/rkward/plugins/analysis/variances/fligner_test.xml
index 5f74396..c524fe4 100644
--- a/rkward/plugins/analysis/variances/fligner_test.xml
+++ b/rkward/plugins/analysis/variances/fligner_test.xml
@@ -7,7 +7,7 @@
 		<row>
 			<varselector id="vars"/>
 			<column>
-				<varslot type="numeric" id="x" source="vars" multi="true" required="true" label="samples" min_vars="2"/>
+				<varslot types="numeric" id="x" source="vars" multi="true" required="true" label="samples" min_vars="2"/>
 			</column>
 		</row>
 	</dialog>
diff --git a/rkward/plugins/analysis/variances/levene_test.xml b/rkward/plugins/analysis/variances/levene_test.xml
index 6a5d390..827cf6b 100644
--- a/rkward/plugins/analysis/variances/levene_test.xml
+++ b/rkward/plugins/analysis/variances/levene_test.xml
@@ -7,8 +7,8 @@
 		<row>
 			<varselector id="vars"/>
 			<column>
-				<varslot type="numeric" id="y" source="vars" required="true" label="response variable"/>
-				<varslot type="factor" id="group" source="vars" required="true" label="groups"/>
+				<varslot types="numeric" id="y" source="vars" required="true" label="response variable"/>
+				<varslot types="factor" id="group" source="vars" required="true" label="groups"/>
 			</column>
 		</row>
 	</dialog>
diff --git a/rkward/plugins/distributions/tests/ad_test.xml b/rkward/plugins/distributions/tests/ad_test.xml
index d894469..498c680 100755
--- a/rkward/plugins/distributions/tests/ad_test.xml
+++ b/rkward/plugins/distributions/tests/ad_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
 						<text>
 							Note: Objects must have at least 8 values
 						</text>
diff --git a/rkward/plugins/distributions/tests/cvm_test.xml b/rkward/plugins/distributions/tests/cvm_test.xml
index 19b5e58..8d01057 100755
--- a/rkward/plugins/distributions/tests/cvm_test.xml
+++ b/rkward/plugins/distributions/tests/cvm_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
 						<text>
 							Note: Objects must have at least 8 values
 						</text>
diff --git a/rkward/plugins/distributions/tests/jb_test.xml b/rkward/plugins/distributions/tests/jb_test.xml
index 9ff8da4..3b49259 100755
--- a/rkward/plugins/distributions/tests/jb_test.xml
+++ b/rkward/plugins/distributions/tests/jb_test.xml
@@ -10,7 +10,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/distributions/tests/lillie_test.xml b/rkward/plugins/distributions/tests/lillie_test.xml
index 0542d43..78f3be1 100755
--- a/rkward/plugins/distributions/tests/lillie_test.xml
+++ b/rkward/plugins/distributions/tests/lillie_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="5"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="5"/>
 						<text>
 							Note: Objects must have at least 5 values
 						</text>
diff --git a/rkward/plugins/distributions/tests/pearson_test.xml b/rkward/plugins/distributions/tests/pearson_test.xml
index a1f4e16..3d8969d 100755
--- a/rkward/plugins/distributions/tests/pearson_test.xml
+++ b/rkward/plugins/distributions/tests/pearson_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="8"/>
 						<text>
 							Note: Objects must have at least 8 values
 						</text>
diff --git a/rkward/plugins/distributions/tests/sf_test.xml b/rkward/plugins/distributions/tests/sf_test.xml
index 54fbf03..7a8463f 100755
--- a/rkward/plugins/distributions/tests/sf_test.xml
+++ b/rkward/plugins/distributions/tests/sf_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="5" max_lenght="5000"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="5" max_lenght="5000"/>
 						<text>
 							Note: Objects must have between 5 and 5000 values
 						</text>
diff --git a/rkward/plugins/distributions/tests/shapiro_test.xml b/rkward/plugins/distributions/tests/shapiro_test.xml
index fe999eb..ed03862 100755
--- a/rkward/plugins/distributions/tests/shapiro_test.xml
+++ b/rkward/plugins/distributions/tests/shapiro_test.xml
@@ -9,7 +9,7 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="3" max_length="5000"/>
+						<varslot types="numeric" multi="true" id="x" source="vars" required="true" label="variable(s):" min_length="3" max_length="5000"/>
 						<text>
 							Note: Objects must have between 3 and 5000 values
 						</text>
diff --git a/rkward/plugins/plots/box_plot.xml b/rkward/plugins/plots/box_plot.xml
index 7edf756..4f0a9e3 100644
--- a/rkward/plugins/plots/box_plot.xml
+++ b/rkward/plugins/plots/box_plot.xml
@@ -41,7 +41,7 @@
 						<varselector id="vars" />
 						<column>
 							<varslot multi="true" type="numeric" source="vars" id="x" label="Variable(s):" required="true"/>
-							<varslot type="numeric" source="vars" id="outcome" label="Outcome variable:" required="true"/>
+							<varslot types="numeric" source="vars" id="outcome" label="Outcome variable:" required="true"/>
 							<varslot multi="true" source="vars" id="groups" label="Group variable(s):" required="true"/>
 							<spinbox type="integer" id="dodges" label="Dodged groups" min="0" initial="0"/>
 						</column>
diff --git a/rkward/plugins/plots/cor_graph.xml b/rkward/plugins/plots/cor_graph.xml
index 99995a0..2565288 100644
--- a/rkward/plugins/plots/cor_graph.xml
+++ b/rkward/plugins/plots/cor_graph.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-					<varslot type="numeric" min_vars="1" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
+					<varslot types="numeric" min_vars="1" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
 					<preview id="preview"/>
 					</column>
 				</row>
diff --git a/rkward/plugins/plots/irt/dichotomous/plot_ltm.xml b/rkward/plugins/plots/irt/dichotomous/plot_ltm.xml
index d16e92d..d6348a9 100644
--- a/rkward/plugins/plots/irt/dichotomous/plot_ltm.xml
+++ b/rkward/plugins/plots/irt/dichotomous/plot_ltm.xml
@@ -18,7 +18,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="ltm" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="ltm" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class ltm are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/dichotomous/plot_rasch.xml b/rkward/plugins/plots/irt/dichotomous/plot_rasch.xml
index 4b5e5bf..5413233 100644
--- a/rkward/plugins/plots/irt/dichotomous/plot_rasch.xml
+++ b/rkward/plugins/plots/irt/dichotomous/plot_rasch.xml
@@ -17,7 +17,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="rasch" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="rasch" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class rasch are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/dichotomous/plot_tpm.xml b/rkward/plugins/plots/irt/dichotomous/plot_tpm.xml
index 27d605c..fab837b 100644
--- a/rkward/plugins/plots/irt/dichotomous/plot_tpm.xml
+++ b/rkward/plugins/plots/irt/dichotomous/plot_tpm.xml
@@ -17,7 +17,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="tpm" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="tpm" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class tpm are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/polytomous/plot_grm.xml b/rkward/plugins/plots/irt/polytomous/plot_grm.xml
index f6963be..bf8ae3d 100644
--- a/rkward/plugins/plots/irt/polytomous/plot_grm.xml
+++ b/rkward/plugins/plots/irt/polytomous/plot_grm.xml
@@ -17,7 +17,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="grm" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="grm" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class grm are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/polytomous/plot_pcm.xml b/rkward/plugins/plots/irt/polytomous/plot_pcm.xml
index e5a5642..60ec909 100644
--- a/rkward/plugins/plots/irt/polytomous/plot_pcm.xml
+++ b/rkward/plugins/plots/irt/polytomous/plot_pcm.xml
@@ -9,7 +9,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class Rm are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/polytomous/plot_rsm.xml b/rkward/plugins/plots/irt/polytomous/plot_rsm.xml
index 28097e5..64eaed4 100644
--- a/rkward/plugins/plots/irt/polytomous/plot_rsm.xml
+++ b/rkward/plugins/plots/irt/polytomous/plot_rsm.xml
@@ -9,7 +9,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to plot:"/>
+            <varslot types="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to plot:"/>
             <text>Only objects of class Rm are valid!</text>
             <stretch />
             <preview id="preview"/>
diff --git a/rkward/plugins/plots/irt/tests/eRm_plotLR.xml b/rkward/plugins/plots/irt/tests/eRm_plotLR.xml
index 1fc407a..c4b83ca 100644
--- a/rkward/plugins/plots/irt/tests/eRm_plotLR.xml
+++ b/rkward/plugins/plots/irt/tests/eRm_plotLR.xml
@@ -21,7 +21,7 @@
         <row id="row_vars">
           <varselector id="vars" />
           <column>
-            <varslot type="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to test (plot):"/>
+            <varslot types="numeric" id="x" classes="Rm" source="vars" required="true" label="Choose fitted model to test (plot):"/>
             <text>Only objects of class Rm are valid!</text>
             <stretch />
             <radio id="rad_splitcr" label="Split criterion for subject raw scores">
@@ -30,7 +30,7 @@
               <option label="Full raw score split" value="all.r" />
               <option label="Use vector to define groups" value="vector" />
             </radio>
-            <varslot type="numeric" id="splitvector" source="vars" label="Select grouping vector:"/>
+            <varslot types="numeric" id="splitvector" source="vars" label="Select grouping vector:"/>
             <text>Can be numeric, character or a factor</text>
             <preview id="preview"/>
           </column>
diff --git a/rkward/plugins/plots/scatterplot_matrix.xml b/rkward/plugins/plots/scatterplot_matrix.xml
index ae39ddc..8dd5e7e 100644
--- a/rkward/plugins/plots/scatterplot_matrix.xml
+++ b/rkward/plugins/plots/scatterplot_matrix.xml
@@ -9,7 +9,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" min_vars="1" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
+						<varslot types="numeric" min_vars="1" multi="true" id="x" source="vars" required="true" label="variable(s):"/>
 						<preview id="preview"/>
 					</column>
 				</row>
diff --git a/rkward/plugins/plots/stem.xml b/rkward/plugins/plots/stem.xml
index 066ece4..dce6c60 100644
--- a/rkward/plugins/plots/stem.xml
+++ b/rkward/plugins/plots/stem.xml
@@ -10,7 +10,7 @@
 				<row>
 					<varselector id="vars"/>
 					<column>
-						<varslot type="numeric" id="x" multi="false" source="vars" required="true" label="variable:"/>
+						<varslot types="numeric" id="x" multi="false" source="vars" required="true" label="variable:"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/simple_anova/description.xml b/rkward/plugins/simple_anova/description.xml
index ccf6a8b..5d2f93d 100644
--- a/rkward/plugins/simple_anova/description.xml
+++ b/rkward/plugins/simple_anova/description.xml
@@ -14,8 +14,8 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" id="x" source="vars" required="true" label="dependent variable"/>
-						<varslot type="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
+						<varslot types="numeric" id="x" source="vars" required="true" label="dependent variable"/>
+						<varslot types="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
 					</column>
 				</row>
 			</tab>
diff --git a/rkward/plugins/testing/optionset.xml b/rkward/plugins/testing/optionset.xml
index 611eda0..f2e69c8 100644
--- a/rkward/plugins/testing/optionset.xml
+++ b/rkward/plugins/testing/optionset.xml
@@ -26,7 +26,7 @@
 							<row>
 								<varselector id="vars"/>
 								<column>
-									<varslot type="numeric" id="mx" source="vars" required="true" label="Pick an object"/>	<!-- NOTE: requiredness does not work, correctly, yet -->
+									<varslot types="numeric" id="mx" source="vars" required="true" label="Pick an object"/>	<!-- NOTE: requiredness does not work, correctly, yet -->
 									<input id="summary" label="Enter a summary" size="large" initial="I am the default"/>
 									<stretch/>
 								</column>
@@ -56,7 +56,7 @@
 				<text>First, select some objects, here (it doesn't matter, what you pick).</text>
 				<row>
 					<varselector id="vars"/>
-					<varslot type="numeric" id="x" source="vars" required="false" label="variables" multi="true"/>
+					<varslot types="numeric" id="x" source="vars" required="false" label="variables" multi="true"/>
 				</row>
 				<text><p> </p><p>Next, see how the controls allow you to specify "Comments" for each object.</p></text>
 				<row>
diff --git a/rkward/plugins/testing/test1.xml b/rkward/plugins/testing/test1.xml
index a8512ee..0921fe9 100644
--- a/rkward/plugins/testing/test1.xml
+++ b/rkward/plugins/testing/test1.xml
@@ -42,8 +42,8 @@
 						<varselector id="vars"/>
 					</column>
 					<column>
-						<varslot type="numeric" id="x" source="vars" required="true" label="dependent variable"/>
-						<varslot type="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
+						<varslot types="numeric" id="x" source="vars" required="true" label="dependent variable"/>
+						<varslot types="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
 					</column>
 				</row>
 				<!--<scriptable id="scripty"/>-->
diff --git a/rkward/plugins/testing/test2.xml b/rkward/plugins/testing/test2.xml
index e1e4804..ae4991a 100644
--- a/rkward/plugins/testing/test2.xml
+++ b/rkward/plugins/testing/test2.xml
@@ -13,8 +13,8 @@
 				<spinbox id="box" type="integer" label="Spin it!"/>
 			</column>
 			<column>
-				<varslot type="numeric" id="x" source="vars" required="true" label="dependent variable"/>
-				<varslot type="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
+				<varslot types="numeric" id="x" source="vars" required="true" label="dependent variable"/>
+				<varslot types="numeric" id="y" source="vars" required="true" multi="true" label="fixed factors"/>
 			</column>
 		</row>
 	</dialog>



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