This painting program is written exclusively in Actionscript for Flash, based on ECMAScript.
Actionscript is an object-oriented scripting language with highly advanced features in versions 2 and 3.

Of note in this example, and what sets it apart from most Flash painting programs and tutorials,
is that the paint will never bleed outside the edge of the designated painting surface.

Take a few minutes to enjoy the act of painting. Get lost in it. That's the whole point. Ahh!