Parley: Is there a way to use a larger font?

[Georg Profos]

Hi *,

I've been using Parley on Ubuntu for a while, and now got a larger  
laptop with a larger screen. But when running Parley practice  
(written), the questions shown and the answers I type appear in a  
microscopic font in the middle of an empty screen. Is there a way to  
change the font size? If so, I'd be glad to hear how. I did check the  
online manual but found no hint.

Ubuntu Version: 14.04
Parley Version: 1.0.0

With thanks & kind regards,
Georg