diff --git a/doc/efun/get_extra_wizinfo b/doc/efun/get_extra_wizinfo
new file mode 100644
index 0000000..c356fba
--- /dev/null
+++ b/doc/efun/get_extra_wizinfo
@@ -0,0 +1,19 @@
+SYNOPSIS
+        mixed get_extra_wizinfo (object wiz)
+        mixed get_extra_wizinfo (string wiz)
+        mixed get_extra_wizinfo (int    wiz)
+
+DESCRIPTION
+        Returns the 'extra' information that was set for the given
+        wizard <wiz> in the wizlist.
+
+        If <wiz> is an object, the entry of its creator (uid) is used.
+        If <wiz> is a string (a creator aka uid), it names the entry
+        to use.
+        If <wiz> is the number 0, the data is get from the default wizlist
+        entry.
+
+        The function causes a privilege violation.
+
+SEE ALSO
+        wizlist_info(E), set_extra_wizinfo(E)