The ability to do this is pretty much “make or break” to the usage of tags for us. Therefore, I’ll submit a doc improvement ticket for this so that the section on tags in the “Advanced Playbook” section specifically mentions this syntax. The only place I found a reference to this, post-facto, was in the examples, and I tend to go to those once I know a feature already exists.
I will also submit an enhancement to support the action-like syntax for tags in addition to the current behavior.