editing context menu summary

Discussion created by greggmasaki2 on Nov 7, 2013
I've been searching off and on for years looking for a comprehensive summary on how to use editing context menu items such as Absolue X, Y , Direction/Length, Parallel, Perpendicular, Segment Deflection etc but unable to find it.  Does it exist?  I'd like it to summarize how to activate each option and its use.