Preface: Don't know if this is technically the right place to post this but none of the other subs seemed appropriate.

I only just learned about the cycling function that's applied by default the the "A" key. I'd like to return to A's default behavior but I am unable to find the name of this function.

Furthermore, when I restore to defaults, "A" works fine but when I try and look at it in the tools -> customize -> keyboard area, it doesn't list A at all and when I try and assign a to some other arbitrary command, it just says that it is already assigned and would I still like to proceed. Typically with every other command, it will say the key is already assigned to "[insert specific action here].

I have tried googling it but given how many other unrelated things will show up when searching something with "a key" in it makes it difficult. Tried applying a bunch of search parameters to no avail.

Appreciate any and all help. Thanks