Marked for listing: What is this missing?

What’s the trick to removing things on supporters from being listed in the room description? The below doesn’t work, nor do listing-contents rules seem to help.

[code]The house is a room.

A supporter can be tall.

Definition: a thing (called prop) is obscure:
if the prop is on a tall supporter, yes;
no.

Before listing nondescript items:
now every obscure thing is not marked for listing.

The table is an enterable supporter in the house. It is scenery. It is tall.

The candle is on the table.[/code]

That information is listed by the ‘describe what’s on scenery supporters in room descriptions rule’. You can unlist it or replace it.

[code]The describe what’s on non-tall scenery supporters in room descriptions rule is listed instead of the describe what’s on scenery supporters in room descriptions rule in the for printing a locale paragraph about rulebook.

For printing a locale paragraph about a thing (called the item)
(this is the describe what’s on non-tall scenery supporters in room descriptions rule):
if the item is tall, do nothing;
otherwise consider the describe what’s on scenery supporters in room descriptions rule.[/code]

I think you could also do it in an after choosing notable locale objects rule:

After choosing notable locale objects when a tall scenery supporter is in the location: Repeat with item running through things enclosed by a tall scenery supporter: Set the locale priority of item to 0.