Twisted cable abbreviation

#1

I’ve come across abbreviations I’m unable to decipher: 1/1 TLPC and 1/1 TRPC.

Any help would be great!

#2

I think 1/1 TLPC is 1 stitch held to the front, purl the next stitch, knit the stit held forward.

Which would make TRPC 1 stitch held to the back, purl the next stitch, knit the stitch helf back