ACZoom

Send it to the author's email address in the package.

One open issue would be whether to use a entirely new tag id p: or to add some other way of identifying this - maybe attributes?

Instead of
[ p:url text ]

use:

[ l-popup:url text ]

or

[ l:url text option=popup ]

The final syntax could also be used to add class= values, or other attributes for the HTML a tag.

etc?