Asking a question, I just noticed there are two seemingly identical tags (which aren't aliases at the time of this writing): source and source-code.
I have no strong opinion about which one should be the "leading" tag here, but I think it'd make sense to merge them.
I also see that source has source-code suggested as a synonym, but lack the reputation to vote myself. So please consider that a nudge, everyone with high enough reputation.
source
(in shells that support it) or the.
(dot) utility, but the tag text is in conflict with that.