Haha, just realised that the Kanji for Anki- well one of them- isn't actually in the Heisig method! Since memorise is already in use, lets use "recite from memory"

諳 - (words, sounds)

First Story- some people read the words, some people listen to the sounds. Either way, we all use SRSs to recite things from memory.

I wonder what's the difference from 暗記

I think that's just a case of substituting an uncommon kanji with a similar one of similar appearance and reading.

Awesome! I've never seen 諳. Makes a lot more sense.