diff --git a/doc/efun/set_driver_hook b/doc/efun/set_driver_hook
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+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/driver_hook.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_DEFAULT_METHOD
+          arg: lambda closure, lfun closure, function name.
+          Optional hook for default method implementation.
+
+        H_DEFAULT_PROMPT
+          arg: lambda closure, lfun closure, prompt string.
+          Optional hook for the default command prompt.
+
+        H_PRINT_PROMPT
+          arg: lambda closure, lfun closure, function name.
+          Optional hook to print the command prompt.
+
+        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 generate the default message if an entered
+          command couldn't be parsed and no notify_fail() command is
+          in effect.
+
+        H_SEND_NOTIFY_FAIL
+          arg: lambda closure, lfun closure, string.
+          Optional hook to deliver the notify fail message from a failed
+          command.
+
+        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_AUTO_INCLUDE
+          arg: lambda closure, lfun closure, string
+          Optional hook to specify a string to be included before the
+          source of every compiled LPC object.
+
+        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)