Possiblity to merge similar <tags>?

One problem when user created are allowed, is similar (hyphen Vs no hyphen, short form vs long form, etc.) are created for the same topic. Plus different language naturally have different for the same topics.

For example, with “power”, there are three :

  • power-management
  • powersaving
  • power-saving

Does ASK have the capability to merge tags?

If yes, how can we inform the moderators that certain should be merged?

After merge, will still be searchable, etc?