Another frequent operation is merging two tags, because you find that one tag is a duplicate of another or any other reason. Mergin two tags is very simple with Tagsistant, it's just a matter of moving all the content of a tag (the merged) into another (the destination) and then delete the merged one:

$ mv store/merged_tag/@/* store/destination_tag/@/
$ rmdir tags/merged_tag

The use of @@/ in place of @/ may help in understanding and checking what's going on. @@/ disables the reasoner, as you'll read soon, and gives you a clearer view of what's tagged how in the end.