Welcome to the home of EX11. Ex11 is an X windows graphics system for Erlang. This system is written in 100% Erlang and talks directly to the X server. With this you can do anything.
The latest release is release-2.5 - this is an "in between" release. release-2.5 contains many undocumented widgets, the intention of release-2.5 it merely to test that the initialization routines work correctly.
If you run release-2.5 and initialization does not work can you please mail the file startup_error_report to me.