That is true enough but the caller still has to say words to the pilot. So technically (if you remove practice etc) only the caller needs to know it.

Seriously though, I wonder if is asking for a "how to properly fly the figure" text instead of a "what is the figure". In the first narrative, he not only gives the how to (pull to vertical, 1/2 roll on the upline etc) but also gives scoring critera. So maybe the AMA rulebook would help. I know it helped me to understand exactly what is expected of each figure.

But really, understanding of them both is really required. You can read Aresti, but if you do not know the judging criteria you'll never do well.

AMA Rules for Scale Aerobatics http://www.modelaircraft.org/UserFil...Aerobatics.pdf