From the NannyMUD documentation

LAST CHANGE

2000-12-14

FUNCTION

NAME
        command - Execute a command in a living object.


SYNTAX
	int command(string command, object obj)

DESCRIPTION
	With this function an object can command itself to perform
	an action that previously has been added with add_action.
	The given string `command' should be on the same format as
	if it had been given from the command line.
	The object 'obj' is optional; default is this_object().

	`command()' returns the number eval-cycles that was used to
	perform the command, or 0 if it proved impossble due to
	eval-cost.

	A force function can then simply be implemented in the player-
	object like this:

	nomask int // No shadowing this function, thank you.
	force_player(string command)
	{
	  if (ok_to_force())
	    if (command(command))
	      return 1;
	  return 0;
	}

	The function `ok_to_force()' can then determine if it is
	permitted for the person that tries to execute the command to
	force the player or not.


NOTE
	'command' cannot be used when an action added with 'add_action'
	is connected with a function declared as 'static'.