Package dia: Information

Dia is a GNU program designed to be much like the Windows
program 'Visio'. It can be used to draw different kind of diagrams.

It can be used to draw a variety of diagram types, including UML, Network,
flowchart and others.  The native file format for Dia is XML (optionally
gzip compressed).  It has print support, and can export to a number of
formats such as EPS, SVG, CGM and PNG.