Bit surprised by this but we don't seem to have a tag for Indexing ? Possibly one of the most used words on here. I don't have the privilege to create tags so a question feels appropriate.
Dunno - I would see indexing as being a subset of the existing gears tag.
I mean, can you think of any question about indexing that is not about gears/gearing?
Perhaps adding synonym from, indexing to gears is the right solution?
No. Indexing has been the rule rather than the exception, for what, 25+ years?
People who want to talk friction will mention that.