SYNOPSIS
	void set_driver_hook(int what, closure arg)
	void set_driver_hook(int what, string arg)
	void set_driver_hook(int what, string * arg)

DESCRIPTION
	This privileged efun sets the driver hook 'what' (values are
	defined in /sys/driverhooks.h) to 'arg'.
	The exact meanings and types of 'arg' depend of the hook set.
	To remove a hook, set 'arg' to 0.

	These hooks exist:

	H_MOVE_OBJECT0
	H_MOVE_OBJECT1
	  arg: unbound lambda
	  Mandatory hooks implementing the move_object() efun.

	H_LOAD_UIDS
	H_CLONE_UIDS
	  arg: unbound lambda or lfun closure
	  Mandatory hooks to determine the (e)uid of new objects.

	H_CREATE_SUPER
	H_CREATE_OB
	H_CREATE_CLONE
	H_RESET
	H_CLEAN_UP
	  arg: lambda closure (H_CLEAN_UP also accepts a lfun
	    closure), function name.
	  Optional hooks for creation/reset/clean up-actions.

	H_MODIFY_COMMAND
	  arg: lambda closure, lfun closure, function name, mapping
          Optional hook for modifying player commands before the
          parser sees them.

	H_NOTIFY_FAIL
	  arg: lambda closure, lfun closure, string.
	  Mandatory hook to issue the default message if an entered
	  command couldn't be parsed and no notify_fail() command is
	  in effect.

	H_NO_IPC_SLOT
	  arg: string.
	  Optional hook specifying the 'sorry' messages if logins are
	  rejected due to fullness of the mud.

	H_INCLUDE_DIRS
	  arg: lambda closure, lfun closure, string array.
	  Semi-mandatory hook specifying the directories where <>-type
	  include files are searched.

	H_TELNET_NEG
	  arg: lambda closure, lfun closure, string.
	  Optional hook to specifiy how to perform a single telnet
	  negotiation.

	H_NOECHO
	  arg: lambda closure, lfun closure, string.
	  Optional hook to specifiy how to perform the telnet actions
	  to switch the echo mode (used for e.g. password input_to()s).
	
	H_ERQ_STOP
	  arg: lambda closure, lfun closure.
	  Optional hook to notify the mudlib about the termination of
	  the erq demon.

	See hooks(C) for a detailed discussion.

HISTORY
	Introduced in 3.2.1@1 as efun309(), renamed to
	set_driver_hook() in 3.2.1@13

SEE ALSO
	hooks(C)
