diff --git a/doc/hook/auto_include b/doc/hook/auto_include
new file mode 100644
index 0000000..a82adda
--- /dev/null
+++ b/doc/hook/auto_include
@@ -0,0 +1,37 @@
+SYNOPSIS
+        #include <sys/driver_hooks.h>
+
+        set_driver_hook(H_AUTO_INCLUDE, value)
+
+        <value> being:
+
+          string <text>
+          string <closure>(string base_file, string current_file
+                          , int sys_include)
+
+DESCRIPTION
+        Optional hook specifying a string to be included before
+        the source of every compiled LPC object.
+        Hook setting can be a string or a closure.
+
+        If the setting is a string, it will be automatically included before
+        the source of every compiled LPC object.
+
+        If the setting is a closure, it is called for every file
+        opened by the compiler. <base_file> will be the filename of
+        the compiled object, <current_file> the name of a file
+        included directly or indirectly by the <base_file>. When the
+        <base_file> itself is opened, <current_file> will be 0. For an
+        included file, <sys_include> will be TRUE if it is a <>-type
+        include.
+
+        If the result from the call is a string, it will be included
+        before the actual text of the file.
+
+        In both cases, the string will be included as-is; in
+        particular no terminating '\n' will be added.
+
+HISTORY
+
+SEE ALSO
+        hooks(C), include_dirs(H)