[Bug-apl] Request to implement ^S and ^Q

[Christian Robert]

Request to implement ^S and ^Q in the interactive session.

In a Linux terminal, when something is scrolling too fast you can always press 
Control-S (meaning stop) to freeze the display
so you can see what happening, and scroll up/down, then you press Control-Q 
(meaning continue) and it will resume.

Those 2 signals are actually ignored by the actual interactive apl interface. 
(to be proven, not sure at 100%)

My guest is that if they were not ignored, the default will actually do the job 
(suspend and resume) without any programming changes.


I may be wrong.

Xtian.

you can test it on Linux by issuing "cat `a *very large file*`" and typing 
Control-S (to stop) .... then Control-D (to resume) displaying.