TaggingEdit
Tagging is the process of assigning a meaningful label to a particular version of a source tree using a version control system. Tags are like branches, except they are read-only.
Tagging with SVK
Tagging the HEAD of the trunk
svk cp //mirrors/project/trunk //mirrors/project/tags/tag_name \
-m "Tagging the x.y release of z"
Tagging with Subversion
Tagging the HEAD of the trunk
svn cp svn+ssh://svn.example.com/project-name/trunk svn+ssh://svn.example.com/project-name/tags/the_tag