Command: measure - measuring the resources a command requires to execute

Description:
	Tells you how many evaluated nodes the command takes to be
	executed. It is the return value of the efun command.

	If a function takes too many nodes, it breaks with the error
	message 'eval_cost too big'.

Syntax:
	measure <command>

Examples:
	Nemesis> measure examine calendar
	It is one of these tear off calendars.
	On the top leaf you read:
	Today is Snakesday, the 23rd day of the month of the Warm Rain
	in the year 1416.
	It is spring.
	==> 6251 units.

Note:
	The displayed values might vary for the same command a bit.

See also: efun/command