Example: ** The Undertomb 2
Location: Using new kinds of value in properties
RecipeLocation: Lighting
Index: Rooms with sounds of nearby water, illuminated by flickering light
Description: Flickering lantern-light effects added to the Undertomb.
For: Z-Machine

	{*}"Undertomb 2"

	Section 1 - Procedure

	Brightness is a kind of value. The brightnesses are guttering, weak, radiant and blazing.

	A brightness can be adequate or inadequate. A brightness is usually adequate. Guttering is inadequate.

	Temperature is a kind of value. 100C specifies a temperature.

	A brightness has a temperature. The temperature of a brightness is usually 700C. The temperature of blazing is 1400C. The temperature of radiant is 1100C.

	A dead end is a kind of room with printed name "Dead End" and description "This is a dead end, where crags in the uneven rock are caught by the [brightness of the lantern] flame you hold aloft. Despite [river sound] there is no sign of the stream." A dead end is usually dark.

	A dead end has some text called river sound. The river sound of a dead end is usually "a faint whispering of running water".

	Section 2 - Scenario

	The Undertomb is a dark room. "From this dim cross-groined room, exits depart east, south, and northwest."

	East is a dead end. South is a dead end with printed name "Collapsed Dead End".

	Northwest is a dead end called the Tortuous Alcove.  The Tortuous Alcove has river sound "a gurgle of running water".

	The player carries a book. The description of the book is "[if the brightness of the lantern is adequate]Many secrets are now yours.[otherwise]No, the print's too tiny by this awful light."

	In the Undertomb is a lantern. It is lit. The lantern has a brightness. The lantern is blazing. The description of the lantern is "The lantern shines with a flame at [temperature of the brightness of the lantern]."

	After waiting in the Tortuous Alcove when the brightness of the lantern is not guttering:
		now the lantern is the brightness before the brightness of the lantern;
		say "You wait so long that your lantern dims a bit."

	Test me with "east / west / get lantern / east / west / south / north / northwest / read book / x lantern / z / x lantern / read book / look / z / x lantern / read book / look / z / x lantern / read book / look".