This might seem superfluous, and it's probably already stablished in the stack exchange community as a whole, but it would be good to standardise anyway.
When tagging questions, should we use
Go with the gerund. The intuition for tag names is that they complete the sentence “this question is about ____”. Infinitives are a poor fit.
Looking at existing sites, a tag called
align exists only on TeX, where it's a proper noun and not the verb;
aligning exists nowhere;
alignment exists on 10 sites. A tag called
load exists on many sites, but it's about the system load (so a noun), not about the verb (at least officially: it does get a lot of misuse, where “load” is used to mean “I happen to be loading something” instead of “this question is about loading something”).
I would go with
align for verb tags.
Treat it as an imperative. You are trying to tell Emacs to
verb. To go with what J David Smith said,
-ing is what you are looking to do, while you are looking for the method to get Emacs to do what you want.
This also matches Emacs convention on commands for the most part.