I actually use GIMP for taking notes and save as both an xcf and pdf. GIMP is basically a simplified and free Photoshop. I can doodle concepts that can't be exp

I actually use GIMP for taking notes and save as both an xcf and pdf. GIMP is basically a simplified and free Photoshop. I can doodle concepts that can't be explained clearly with text alone unless I do a bunch of formatting and ASCII art.