I've tried to open pdf files with the BPM Notepad, but the program just hangs.Also with opening Microsoft wordpad or notepad, BPM shows errors.I don't use MS Word so I wouldn't know if that works or not.Thing to keep in mind is that this is a 'notepad' so I don't think it'll show images.Anyway you can always try it out yourself with different formats.
I think perhaps the program needs a few things ironing out.For now I'm just copying and pasting text into the BPM Notepad.
I've been speaking with the developer of the notepad and he was very pleased with my feedback and interested about my suggestions.I'll post his thoughts on here soon.

Thanks!