3.19: problem compiling user manual

[Mike Dowling]

#lout all >op
lout file "gra_summ" (from "gra" line 44, from "all" line 44):
     8,1: 23.6c object too high for 23.6c space; @Scale inserted
lout file "cpp_tabs" (from "cpp" line 80, from "all" line 45):
   56,23: prg2lout 2,1: program text ended within comment
   58,35: prg2lout 2,1: program text ended within comment
lout:
         internal error: assert failed in FlushGalley: dest_side != FWD
         || !is_indefinite(type(y))!
Aborted