Documentation for psd

I red in themeforest wiki that every item here for sell needs documentation . But what documentation can have Psd file ? What should I write ? I found something about this here :

Segen says in that thread : ” Declare fonts used and links if free. Describe your layer structure. Additionally you can add color codes for design. That’s about it. ” Can somebody write something more about it?

Write a .txt file or a .html file explaining whoever buys your file how te file is organized and resources you have used in it that are not available in the file he bough:

- The PSD files is well organized in named groups. All layers are named.

-I ahve used several custom fonts that are available at xxx.com

stuff like that…. Mention everything that you find is relevant for the customer

The free file of the month for November was a PSD . The docs just said there is one PSD per page, and the name of the font. I guess that’s all you need!