The notify file is called whenever a watched file is changed during commit, edit or unedit. See also the section called “Mechanisms to track who is editing files” for more details.
In addition to the formatting strings in the common syntax, the following formatting strings are available:
Message supplied by user.
Directory name relative to current root
User being notified
Tag or branch of file being notified
Type of notification
File being notified about
By default the notify file has a string designed to be compatible with older versions of cvs passed in its standard input:
%<< %p %f --- Triggered %y watch on %r By %u