If I do:
z←⍳1000000
the operation is very fast. But if I do:
⍳1000000
it is very slow, presumably because it is formatting the whole thing for display. No problem.
The problem is that during its effort to format for display, I cannot use ^C. ^C appears to work fine in normal situations - but not during the format for display time. During format-for-display time ^C is ignored.
This caused me a problem when I accidentally mis-typed something. The mis-type caused something very large to be displayed. In fact, it was so large that my machine started paging. I was unable to use ^C to stop it. After waiting an hour, I had to kill the process and loose my work.
Thanks.
Blake