[cvs-nhc98] Many fixes to hat-trail:

[Malcolm Wallace]

malcolm: Wed Mar 13 12:27:12 CET 2002

Update of /usr/src/master/nhc/src/hat/tools
In directory hinken:/tmp/cvs-serv17058

Modified Files:
	HatTrail.hs 
Log Message:
Many fixes to hat-trail:
  * Fix "redex = redex" to become "redex = _|_".
  * Add interactive help screen.
  * Allow :set and :help commands in the output/error pane.
  * Trim long lines in the output pane to 76 columns.
  * Verbose mode now expands all lists to explicit applications of (:).
  * Some refactoring of the Set/Mode commands.
  * First attempt (non-working) at using '[' and ']' for list element movement.
  * Remove single letter commands: o O d t s S
  * Add commands :source and :Source.