version 13/130803 by Jon Ingold
Section: Locating the current window
Side windows taking inventories and such-like might want to be able to tell the usual game rules that they're the ones doing so. Throughout the game, the variable "current g-window" tells the game where the output is going. So
Rule for printing the name of the old book while taking inventory and the current g-window is side-window:
say "The Meteor, the Stone (etc.)" instead.