This directory contains the predefined dialog boxes and control panels used by Energize. the ".xd" files are the XDesigner definitions of them. The ".xdc" files are source code written by XDesigner. "fidget-widget" is a shell script that repairs some stupidity in the generated code; we create ".c" files from the output of fidget-widget. This stuff is linked into lwlib.a, in the parent directory.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.