Michael,
Brilliant idea. Of course, a 'programmable' Xowiki object containing program code to return a simple text stream, referenced in the extra_css parameter.
Wouldn't it be great if this could also be referenced using the css: syntax? In fact, if it were possible to pass any Xowiki object to the css: syntax, it would eliminate the need to embed program code. I guess however that any referenced objects would still appear in the recently visited list.
Perhaps it would also be possible to modify the weblog code to exclude specific objects and their descendent objects from consideration. Thus any objects stored in a folder that you specifically exclude would not appear.
Anyway, thank you for the tip, this grants the immediate wish! 😊
R.