BRL-CAD's primary geometry editor is called MGED. MGED's documentation is extensive but incomplete without a concise 1 or 2 page document that details MGED's interface.

This task involves writing an interface reference document that gives a brief descriptive overview of the key bindings, mouse bindings, and primary GUI elements.  It should minimally include the command window, the graphics window, the raytrace control panel, the combination editor, the geometry tree view, and overview graphics window key bindings.

See the below examples!

References:

• http://brlcad.org/wiki/Documentation
• http://brlcad.org/w/images/c/cf/Introduction_to_MGED.pdf
• http://brlcad.org/w/images/8/8c/Shift_Grips_Quick_Reference_Guide.pdf

Examples:

• http://www.tuxmagazine.com/system/files/Touring_The_GIMP.pdf
• http://izatxamir.files.wordpress.com/2010/04/visio-2007-quick-reference-1.jpg
• http://www.thefloatingfrog.co.uk/wp-content/uploads/2010/03/ColorTheory_Screen_White.jpg
• http://wiki.blender.org/uploads/7/7c/BlenderHotkeysEditMode.png
• http://blogs.wandisco.com/wp-content/uploads/2012/08/refcard1.png
• http://www.thisiscarpentry.com/wp-content/uploads/2009/10/ref-card.jpg
• http://code.google.com/p/sketchyphysics2/downloads/detail?name=SketchyPhysics%20-%20Quick%20Reference%20Card%20v2B1.pdf