You could just put the symbol and directions for doing the cable in the key. You don't have to name them. Maybe after writing out the directions, you'll find a pattern in the words that would help to identify them.
Knitting from a chart is so visual, I think the symbol and an explanation is all you really need, though.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry