Changing the parenthetical next to the room name

Authoring Inform 7
1

Say the player is sitting on a chair and there is a table in the room. If they are, the room name reads “ROOM NAME (on the chair)”. How can I change the parenthetical statement to (sitting at the table) in Inform 7?

2

Modify the “room description heading rule”. See thread: https://intfiction.org/t/non-furniture-posture-description-after-room-name/5578/1