New Tag - #AudioDuration

[tarnkappe]

So to be able to use a tag somewhere in the properties configuration (for formatting a title or specifying the sort order) it has to be initialised first. This is done either by putting it into the indexTags or into the itemTags. The difference between these two is that an entry in indexTags also generates a menu entry (a folder) in the navigation structure, and an entry in itemTags does not. Is this correct?