The player character's height is selected randomly at the start of play.

As with ordinary numbers, we can choose random units when this is useful:

"rBGH"
The Pharmaceutical Testing Facility is a room. "A [if the player is short]large [end if][if the player is tall]cramped [end if]white space with sterile counters and a[if the player is tall]n uncomfortable little[end if] stool. There is also a mirror, behind which someone must be watching you. But you can't see through to that."
A counter, a one-way mirror, and a stool are scenery in the Facility. The stool is an enterable supporter. The counter supports a plate.
Height is a kind of value. 5 feet 11 inches specifies a height. 5'11 specifies a height. A person has a height.
Definition: a person is tall if its height is 6 feet 0 inches or more.
Definition: a person is short if its height is 5 feet 4 inches or less.
When play begins:
   now the height of the player is a random height between 5 feet 2 inches and 6 feet 4 inches;
   now the right hand status line is "[height of player]".
Instead of examining the player:
   say "You, Test Subject, are [height of the player] tall."
The growth pill is a kind of thing. A growth pill is always edible. The description is usually "It is leaf-green and has a reassuring logo of a curling vine on the side. Nothing to worry about, nothing at all." Two growth pills are on the plate.
After eating the growth pill:
   increase the height of the player by 0 feet 6 inches;
   say "Your spine does something frightening and painful, and you find yourself looking down on the room from a wholly new angle.";
   try looking.
Test me with "examine me / eat pill / examine me / eat pill / examine me".
Test me with "examine me / eat pill / examine me / eat pill / examine me".
Pharmaceutical Testing Facility
A white space with sterile counters and a stool. There is also a mirror, behind which someone must be watching you. But you can't see through to that.

On the counter is a plate (on which are two growth pills).

>(Testing.)

>[1] examine me
You, Test Subject, are 5 feet 11 inches tall.

>[2] eat pill
(first taking the growth pill)
Your spine does something frightening and painful, and you find yourself looking down on the room from a wholly new angle.

Pharmaceutical Testing Facility
A cramped white space with sterile counters and an uncomfortable little stool. There is also a mirror, behind which someone must be watching you. But you can't see through to that.

On the counter is a plate (on which is a growth pill).

>[3] examine me
You, Test Subject, are 6 feet 5 inches tall.

>[4] eat pill
(first taking the growth pill)
Your spine does something frightening and painful, and you find yourself looking down on the room from a wholly new angle.

Pharmaceutical Testing Facility
A cramped white space with sterile counters and an uncomfortable little stool. There is also a mirror, behind which someone must be watching you. But you can't see through to that.

On the counter is a plate.

>[5] examine me
You, Test Subject, are 6 feet 11 inches tall.