This provides two commands available to the player: "exits" which lists all the obvious exits in the current location, and "enterables" which lists the enterable things.
Version 2/130115 of Possible Movements by Peter Orme begins here. section listing enterables To say enterable list: if an enterable container (called playerbox) encloses the player: say "You could try exiting from [the playerbox]."; otherwise: let L be the list of enterable things in the location of the player; if L is not empty: say "You could try entering [L with definite articles]. "; [otherwise: say "There is nothing obvious you can enter. ";] To say exit list: say "Obvious exits from [the location]: [line break]"; repeat with way running through directions: let place be the room way from the location; if place is a visited room: say "[way] to [the place][line break]"; otherwise if place is a room: say "[way][line break]"; listing enterables is an action applying to nothing. Understand "enterables" as listing enterables. carry out listing enterables: say enterable list. listing exits is an action applying to nothing. Understand "exits" as listing exits. carry out listing exits: say "[exit list][enterable list]"; Possible Movements ends here.
Include Possible Movements by Peter Orme.