Draw with the mouse, arrow keys to change direction of insert, and press d when inserting to cancel.
100% By me, @WDP09. I still need to do many things. If you want to see the BETA version of this, go to https://scratch.mit.edu/projects/440288802/ Warning, the BETA version can be unstable. Please report all bugs in the comment section of the BETA version. Changelog: 1.0.0 - No updates yet.