:pso or :pso!
Major Section: OTHER
Examples:
(set-saved-output t t) ; save proof output for later, but inhibit it now
(set-saved-output :all t) ; same as the line above
:set-saved-output t t ; same as the two lines above
(set-saved-output t nil) ; save proof output for later, but print it now too
(set-saved-output nil t) ; do not save proof output, and print it now
(set-saved-output nil nil); do not save or inhibit output
(set-saved-output nil :normal) ; default: do not save output, and only
; inhibit proof-tree output
General Form:
(set-saved-output save-flg inhibit-flg)
Parameter save-flg is t or :all to cause output to be saved for
later display using pso or pso!; see pso and see pso!, and see the
documentation for proof-checker commands of the same names. Set
save-flg to nil to turn off this feature; except, it always stays on
in proof-checker sessions entered with verify. The other argument,
inhibit-flg, controls whether output should be inhibited when it is
created (normally, during a proof attempt). So a common combination is to
set both arguments to t, to indicate that output should be suppressed for
now but saved for printing with pso or pso!. The examples above
give a good summary of the functionality, including the meaning of values
:all and :normal for the first and second arguments (respectively).
Saved output is cleared at the start of every event, and also at the start of
every proof-checker commands that invoke the prover. Note that
interactive proof-checker commands, that is, from a proof-checker
session entered with verify, are always run with output saved.
Also see set-print-clause-ids, which causes subgoal numbers to be printed
during proof attempts when output is inhibited.