Yes, it has that, so I'll have to dig out the Regular Expression tutorial...that should do the trick. (I have used them, but not often enough to have them memorized.)
An example does not paste in an easy-to-see format, because the "bitmap" is 400 characters long, but each line starts with "M10086 ;" and then 400 characters of bitmap. These are the first few lines, out of about 300 total:
I entered this in Search:
M10086 ;[a-fA-F0-9]*
and this in Replace:
;
and it looks like nothing changed. I guess I will need that help file...I did test the Search in Notepad++, and it found the lines. Not sure if they disabled this, or if I need to name the Search and use that name in the Replace, but I'll look into it tomorrow.
Thanks for your help!