My word processor is Nota Bene. Derived from XyWrite, it is now an up-to-date Windows program. Its default file extension is ".nb". I also use several other extensions, which I associate with Nota Bene in Nirsoft's File Type Manager.
I used to be able to use the attached Viewer Pane to check NB files--it showed NB's formatting codes, but I could cope with that. Now it doesn't show the codes, but it displays the file in a font so tiny that it's barely legible.
The Zoom In button is greyed out, so I can't use that to enlarge the file. (It isn't greyed out for .txt or .docx files.)
If I copy and paste the file in D Opus, and change the extension to .txt (all in D Opus, without opening the file in NB and doing Save As), then open the viewer pane on the new xxx.txt file, it displays as NB files used to--formatting codes visible, but text at a normal, legible, size.
I've been living with this for a year or two now, so I don't remember when the change happened. But is there a way of displaying NB files in a larger font in the Viewer Pane?