Infopage in frameworkintegration

[Alex Merry]

FrameworkIntegration installs a bunch of images and css files to
${DATA_INSTALL_DIR}/kf5/infopage. LXR suggests nothing ever references
an "infopage" directory (either in kf5-qt5 or in qt4-latest), except for
the CMakeLists.txt files in frameworkintegration, and the README.md
(which suggests the images are for info pages for applications).

Are these for GNU Info documentation? Are they actually used anywhere?
Does anyone know whether they have any use?

Alex