Of course. It slipped my mind and when I was flailing around trying to remember it I ran across:
D:\>perldoc -f substr
No Perl script found in input
And I see my problem now -- for *some* reason, "perldoc -f" does not work from a command prompt when it is in the root of D:. That's for *anything: nothing works from D:. What a crazy thing -- I've tried it cd'ed to a dozen other directories
on various other filesystems and it works perfectly.. but not from d:.
oh well, now that I see what I did wrong. thanks for reminding my fuzzy mind {and prodding me to realize that perldoc wasn't working in this odd way}