RSTS/PDP11 quick reference guides

[Ron Hudson]

As I usually do when investigating some new (old) hardware, I like to 
create a "Quick Reference Guide"

Usually in form an 8 1/2 x 11 page with 3 columns on each side meant to 
be folded in 3rds.

Ok RSTS/E people what should be on a quick reference guide? Basic 
syntax? Commands?

The PPN's of common subsystems like OPSER? SPOOL? (are those locations 
standard?)