Bill, following copied from Help, topic "Program Options: Other"
The standard method of window resizing is that text remains the same size and that data entry/display space increases/decreases when a window size is increased/decreased. This is how the windows in most Windows™ applications work. The base font size for lists is set using the Minimum font size setting on the Program Options: Lists screen and the base font size for the Project Explorer is set using the Font size setting on the Program Options: Project Explorer screen.
When using the TMG 5/6 method of window resizing, the font size increases/decreases in list windows when the window size is increased/decreased. The range of the font size change in these windows is controlled by the Minimum font size and Maximum font size settings on the Program Options: Lists screen.
This should make it clear that the font size setting in "Program Options: Lists" will have an effect on nearly all TMG windows whether using the method from the old version 5 and 6, or the more modern default method. With either method if the sizes in other windows have changed. look to those font settings first, plus the other Preference settings referenced in the document mentioned by Virginia.
However, I still cannot figure out how to affect the Tips/Hints window.