Use the pen menu to change the pen size, and the rgb of the pen color :) Mouse down to draw, and press space to clear. SAVE DOES NOT WORK! I don't know how to get it too work, but if you do, please say ;) Btw, this has nothing to do with dots and lines.
Credit to @JTxt to the RGB pen color. Credit to Vexento for music. Credit to Inkscape for graphics (made by me) :D