diff --git a/docs/pdds/draft/pdd32_m0.pod b/docs/pdds/draft/pdd32_m0.pod
index b609a76b2a..3b1188c07a 100644
--- a/docs/pdds/draft/pdd32_m0.pod
+++ b/docs/pdds/draft/pdd32_m0.pod
@@ -352,11 +352,29 @@ Set C<*$1> to whatever is in C<*$2>.  C<$3> is ignored.
 
 Set C<*$1> to C<$2> * 256 + C<$3>.
 
-=item * deref - dereference a register
+=item * deref_i - dereference a integer register
 
 Treat C<*$2> as an array and C<*$3> as an index into that array.  Set C<*$1> to
 whatever's at C<*$2[ *$3 ]>.
 
+=item * deref_n - dereference a numeric register
+
+Treat C<*$2> as an array and C<*$3> as an index into that array.  Set C<*$1> to
+whatever's at C<*$2[ *$3 ]>.
+
+=item * deref_s - dereference a string register
+
+Treat C<*$2> as an array and C<*$3> as an index into that array.  Set C<*$1> to
+whatever's at C<*$2[ *$3 ]>.
+
+=item * deref_p - dereference a pointer register
+
+Treat C<*$2> as an array and C<*$3> as an index into that array.  Set C<*$1> to
+whatever's at C<*$2[ *$3 ]>.
+{{{
+NOTE: not sure whether this op is useful or not.
+}}}
+
 =item * set_ref - change the value of a referenced register
 
 Treat C<*$1> as an array and C<*$2> as an offset into that array.  Set