ISOLTS will never give up on an endless test (such as ps955)

[Eric Swenson]

ISOLTS gives up on a page when it makes no request for 600 seconds (1200 for pages 892, 893 and 955), but every request restarts that wait. A page that loops while printing, like PA870 above, sends a request every few seconds and is never stopped; the operator sees nothing (an error report goes only to the log) and has to notice and BREAK.

[Eric Swenson]

​https://s3.amazonaws.com/eswenson-multics/public/mcrs/MCR10203.pdf