Skencil is a vector drawing program. It's written almost completely in python for flexibilty with some modules written in C for speed.

An outline or general delineation of anything; a first rough or incomplete draught or plan of any design; especially, in the fine arts, such a representation of an object or scene as serves the artist's purpose by recording its chief features; also, a preliminary study for an original work.

To draw the outline or chief features of; to make a rought of.

To plan or describe by giving the principal points or ideas of.