Editing guidelines

Do not document redundant fields such as %playlist_number%. When there is more than one way to do something, only document the way that is described in the official manual; the other ones may be old version leftovers or temporary for some other reason.
Remember: less information is better if it still satisfies 99.99% of the people reading this.

Metadata

In my opinion the metadata description needs to be expanded. For instance, I have no idea what the following means, or what the function does based on that argument: Example: $meta(artist) → "He, She, It" At least put a proper artist title in the quotations to give us an adequate description of the function. 68.80.11.34 07:59, 2 October 2012 (CEST)