Template:Assistant:View intersection/doc

Usage
Inputs:
 * or  &mdash; required &mdash; a category articles must belong to.
 * &mdash; optional &mdash; a second category articles must belong to (except as below).
 * &mdash; optional &mdash; a third category articles must belong to (except as below).
 * &mdash; optional &mdash; if non-blank, articles must not belong to cat2.
 * &mdash; optional &mdash; if non-blank, articles must not belong to cat3.
 * &mdash; optional &mdash; if, only list unpublished articles; if  , list both unpublished and published articles; otherwise, list only published article.
 * &mdash; optional &mdash; label on the link (default as of this writing is "link").

Function:
 * Produces a link that, when followed, displays a scrollable list of published articles belonging to the intersection of up to three categories, using dialog tools.

Internals
This template embeds its parameters in a url, which invokes dialog action do, which converts the parameters from the url into dialog parameters which it then applies (in the usual template-parameter-like way) to page.