To publish, list and remove a tag by hand:-
lcg-ManageVOTag -host lcgce02.gridpp.rl.ac.uk -vo minos --list lcg-ManageVOTag -host lcgce02.gridpp.rl.ac.uk -vo minos --add -tag VO-minos-Test_Tag_0.0 lcg-ManageVOTag -host lcgce02.gridpp.rl.ac.uk -vo minos --remove -tag VO-minos-Test_Tag_0.0which is used by RSD (Remote Software Deployment), our tool for installing code on the GRID.
See @ Experiment Software Installation in LCG-2 / lcg-ManageVOTag.