+Fab button, which is called Float action button, let you feel enjoyable when doing memo.
+This circle can be any corner on screen.
+Do write by finger like usual and common.
If need changing color, then press the button.
Then dialog show up and show you what to do.
Eraser, Color preset, undo, redo, save and more somethings there.
+After completing some instant record, use save icon on the dialog.
+This includes a advertisement for supporting maker.