~/.cvsrc is the main
CVS configuration file.
This file is used by users to specify defaults for different cvs
commands, for example to make all cvs diff
commands run with -u, a user would add
diff -u to their .cvsrc file.
~/.cvswrappers specifies wrappers to be used in
addition to those specified in the CVSROOT/cvswrappers
file in the repository.