Fped is an editor that allows the interactive creation of footprints of electronic components. Footprint definitions are stored in a text format that resembles a programming language.

The language is constrained such that anything that can be expressed in the textual definition also has a straightforward equivalent operation that can be performed through the GUI.

A description of the GUI can be found here: http://downloads.qi-hardware.com/people/werner/fped/gui.html