vc-cvs-create-tag
vc-cvs-create-tag is a compiled Lisp function in `vc-cvs.el
'.
(vc-cvs-create-tag DIR NAME BRANCHP)
Assign to DIR's current revision a given NAME.
If BRANCHP is non-nil, the name is created as a branch (and the current
workspace is immediately moved to that new branch).