In the IDE, go to Preferences, under 'Editor' click 'Editing', then click the 'Select Font' button. A little window will pop-up with the fonts listed along with the sizes available, when done with your selection just use the 'red close button' (seems odd not to have a 'done' button but we've already discussed that in another thread). I appear to be using Monaco 10 and I think a mono-spaced font would be better and it seems that keeping the font small renders better.
Let me know if you have any other problems.
I invoke the program by clicking on the PureBasic icon in my dock at the bottom of the screen. I get a file displayed and a menu at the top of the screen. I don't see any IDE. Is it a separate program? How do I start it up?
Thank you for your help.