"This is best app for quick notes, demo or teaching using mouse, keyboard and pen (any kind of math, science, presentation, annotating existing PDFs and lite drawing). Cool feature is that you can use real mouse as usual and touchscreen (or other input device like tablet) just as pen. Almost everything is intuitive (besides few misleading icon pictures). As rahul mentioned, install it from PPA and not this flatpack. It will work better and will be smaller. "
"Work ok, but carshes on the second game. You have to restart manually after you are done with first."