Peter Norvig's article at
http://www.sdmagazine.com/documents/s=733/sdm0103e/0103e.htm
says of ACL 6.0:
"Editor has limited power unless you use the optional Emacs connection."
What constitutes the unique power of Emacs as a development editor compared
to the ACL editor? Trying Emacs, it seemed the inferior choice due to
coarser integration and few benefits I know of.
Robert