Thank you for the replies!
In general, I don't enter the Terminal except when I absolutely have to, and I always know the "Undo" command when I do.
Caliber looks way powerful enuff to do what I need, I just have to study and experiment
Kacir (on anyone), is there any reason you would prefer rtf to PNG format?
I found sometimes it's just a cross-platform thing (Window uses WAV and Mac uses AIFF files for music, for instance) or maybe rtf handles easier than PNG in general.