The idea is to be have a way to search content on your hard drive with metadata (like name, category, file type, description) instead of just a file name. This way, users can browse content easier and developers can share content easier.
Get the full specification here 
http://developer.ofset.org/cps/Public/devel/assetml/assetml_description/view.
See also the official AssetML web page http://www.ofset.org/assetml.
In order to achieve the reusability goal of assetml, we need to pre-define category names. Category names are used in assetml when a user wants to search a content in its base.
Categories are formatted with names separated by ; like audio;voices;geography. Values are not ordered.
Mandatory describing the overall type of the content, one of:
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