Artifact a3b66f9193050334f483674f8f90f86d8b00cdaf94f9fe6edb56fb9a56f16809:

• File psl-1983/help/top-loop.hlp — part of check-in [eb17ceb7f6] at 2020-04-21 19:40:01 on branch master — Add Reduce 3.0 to the historical section of the archive, and some more
  files relating to version sof PSL from the early 1980s. Thanks are due to
  Paul McJones and Nelson Beebe for these, as well as to all the original
  authors.

  git-svn-id: https://svn.code.sf.net/p/reduce-algebra/code/historical@5328 2bfe0521-f11c-4a00-b80e-6202646ff360 (user: arthurcnorman@users.sourceforge.net, size: 1001) [annotate] [blame] [check-ins using] [more...]

TopLoop(TopLoopRead!*, TopLoopPrint!*, TopLoopEval!*, TopLoopName!*,
----------------------------------------------------------------
		       WelcomeBanner):NIL
                       ------------------

This function is called to establish a new TopLoop (currently for
Standard LISP, RLISP, and BREAK).

It prints the WelcomeBanner, and then invokes a "READ-EVAL-PRINT" loop,
using the given functions. TopLoop provides a standard History and
timing mechanism, retaining on a list (HistoryList!*) the input
and output as a list of pairs.

TopLoop Function         Purpose
(HIST)                   Display full history.
(HIST n)                 Display history from n to present.
(HIST -n)		 Display last n entries.
(HIST n m)               Display history from n to m.
(INP n)                  Return N'th input at this level.
(REDO n)                 Revaluate N'th input.
(ANS n)                  Return N'th result.
(SETQ !*Time T)          Causes evaluation time to be printed for each command.