This section is from the "Version Control with Subversion" book, by Ben Collins-Sussman, Brian W. Fitzpatrick and C. Michael Pilato. Also available from Amazon: Version Control with Subversion.
svnlook help — Help!
Also svnlook -h and svnlook -?.
Displays the help message for svnlook. This command, like its brother svn help, is also your friend, even though you never call it anymore and forgot to invite it to your last party.
?, h