I write lots of formulas and that means spending lots of time in the formula editor, staring at text. So I appreciate the fact that we can change the font, size and colors used in the editor to make things easier to read. By default Crystal uses Courier 10 but I prefer Lucida and will often bump the size up to 12. I started doing this when I was teaching so that students could read formulas on the screen. Then I found it helpful to increase the size when I remote into another PC which reduces the size of the screen. Now I find myself making these changes in my own designer, making formula work easier on the eyes.
To get to these settings go to File>Options and click on the “Formula Editor” tab. If you do some experiments and want to go back to the default settings you can use the “Reset All” button at the bottom of the window.(For examples of my most popular formulas, please visit the FORMULAS page on my website.)