<svnlist svnpath="/usr/bin/svn" workingcopy="/home/user/svnwc" propertyname="svn.list"/>
<svnlist svnpath="/usr/bin/svn" repositoryurl="http://svn.example.com/myrepo/tags" orderDescending="true" limit="10" />
The latter example could produce a list of your tags like this:
revision | author | date | item 4028 | tony | May 19 18:31 | Release_2.9.1.7 4026 | tony | May 18 14:33 | Release_2.9.1.6 4023 | tony | May 16 15:53 | Release_2.9.1.5 4018 | tony | May 13 11:55 | Release_2.9.1.4 4005 | tony | Apr 27 12:09 | Release_2.9.1.3 ...