Artifact ffc659f1d4fae8ed19fbde10ee42e54865093cc80de6f9c1665e204b6e35cbbc:
- File
psl-1983/3-1/help/step.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: 1420) [annotate] [blame] [check-ins using] [more...]
- File
psl-1983/help/step.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: 1420) [annotate] [blame] [check-ins using]
STEP(Form:any):any EXPR -------------------------------------------------------------------------- Step is a loadable option (Load Step). Evaluates form, single-stepping. Form is printed, preceded by -> on entry, <-> for macro expansions. After evaluation, Form is printed preceded by <- and followed by the result of evaluation. A single character is read at each step to determine the action to be taken: Control-N (Next) Step to the Next thing. The stepper continues until the next thing to print out, and it accepts another command. Space Go to the next thing at this level. In other words, continue to evaluate at this level, but don't step anything at lower levels. This is a good way to skip over parts of the evaluation that don't interest you. Control-U (Up) Continue evaluating until we go up one level. This is like the space command, only more so; it skips over anything on the current level as well as lower levels. Control-X (eXit) Exit; finish evaluating without any more stepping. Control-G, Control-P (Grind) Grind (i.e. prettyprint) the current form. Control-R Grind the form in Rlisp syntax. Control-E (Editor) Invoke the structure editor on the current form. Control-B (Break) Enter a break loop from which you can examine the values of variables and other aspects of the current environment. Control-L Redisplay the last 10 pending forms. ? Display this help file.