Re: name of the main trunk

[R Bresner]

cvs update -j 1.27 -j1 foo.c

1 (the number one) always refers to the HEAD of the
untagged 'mainline' branch. "HEAD" refers to the head
of the current branch (and was a bit buggy, last time
I checked. Used to be if a file was added to a branch
when at 1.1, and then never modified on that branch,
HEAD would be unable to identify the file as being on
the particular branch. HEAD would only find the branch
if the file was modified and checked in to the branch,
thus getting a revision like 1.1.2.1 or something. I 
haven't relied on "HEAD" for a while, so I'm not sure
if the bug still exists in 1.11.)