[Plugin: WP-Filebase] – Shortcode documentation

Hi folks

Is there any documentation on how to create short-codes for the WP-Filebase plugin? I can’t seem to find any and all I know how to do (from a problem someone else had!) is show the URL of a post with a specific ID.

[wpfilebase tag=fileurl id=2]

But I want to link to the documents associated the current post / page within specific categories so something like

[wpfilebase tag=fileurl post_id=240 category=2] (or even have it assume the current post and not need that parameter)…

But I can’t find the correct syntax for this anywhere.
(I am doing this outside the main page content so PHP code to do the same would be just as good)

Thanks!