I don't believe there is a way to increase size of chm file text other than by the creator.

For my eyes the size of text in the contents panel is fine.

I purchased license yesterday and look forward to using this promising product.

Alex

Just discovered you can hold down the CTRL and use the mousewheel to zoom textsize in the text area of CHM files. Works great in strataframe help with no exporting etc necessary

I think part of that depends upon the verion of IE you are using (since CHM files are hosted within IE).  I know that on my development machine, the Ctrl+mouse wheel does not work within a CHM file, but it does work within IE by itself.  It's good to know that it works on your machine, Charles; it's certainly worth it for everyone to give it a try before attempting the other methods mentioned in this thread.