Integrate perlio:
Jarkko Hietaniemi [Sun, 20 May 2001 10:49:40 +0000 (10:49 +0000)]
[ 10159]
Document some more of open's features.

p4raw-link: @10159 on //depot/perlio: 68bd741440800c6281f02247ca3e0bbc0ed1a0ea

p4raw-id: //depot/perl@10160


Trivial merge