Inform 7   (released April 30, 2006) 


[...A fragment of Inform 7 source code...]

Check entering the cell-doors: 
  instead say "You are not here to search the cells." 
  
Instead of climbing something when the location is the Guardroom: 
  say "(that is, go up using [the noun])"; 
  try moving the Hallway with the noun. 
  
Check moving the Hallway with generic when the location is the Guardroom: 
  if the closest enemy is not generic: 
    instead say "The opening is above your unaided reach. But the guard is your more immediate problem."; 
  else: 
    prepare move-with-tutorial; 
    instead say "The opening is above your unaided reach. You will need to make use of something."