Sketch is an interactive X11 drawing program (similar to xfig or tgif). It is written almost completely in Python, an object oriented interpreted programming language. The current version is still in a somewhat experimental stage and does not have all the features it should have and may be instable in certain situations. For up to date information about Sketch, have a look at the Sketch web page, or contact the author . If you want to report a bug, please have a look at the web page to check whether a newer release is available or your bug has already been reported.