File psl-1983/3-1/doc/nmode/nm-characters.contents artifact 89ad5480d7 part of check-in d9e362f11e

contents_entry(0 3 {Character Sets and Command Input Conventions} 3-1)
contents_entry(1 3.1 {The 9-bit Command Character Set} 3-1)
contents_entry(1 3.2 {Prefix Characters} 3-2)
contents_entry(1 3.3 {Commands, Functions, and Variables} 3-2)
contents_entry(1 3.4 {Notational Conventions for ASCII Characters} 3-3)