list-of-X support

I think there may (eventually or next week, given this query) be a demand for some kind of generic list-of-X handling code, where X might be figures, tables, articles in sidebars, maps, etc. I'm not aware of us having anything that does that (though the information is available for figures).
Perhaps some kind of markup like these:

\zlistentry|type="maps" title="Abraham's journey to Canaan"\*
\zlistentry|type="tables" title="Patriarchal ages"\*
\zlistentry|type="sections" title="The Birth of Jesus" book="LUK"\*

Where\zlistentry might write the title, pageno entries to a generic or book-specific file. e.g. list-maps-BOOK.lst

And then maybe:

\zincludelist|type="sections" book="LUK"\*

Which would open the file and put it into an appropriately categorised table.