From e6e094cbe35eedd9a8b4bc8369fd6b3bdf3cd603 Mon Sep 17 00:00:00 2001
From: Menno Knevel <magknevel@gmail.com>
Date: Thu, 23 May 2024 19:44:46 +0200
Subject: [PATCH] Update UDO.xml

add
---
 orch/UDO.xml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/orch/UDO.xml b/orch/UDO.xml
index 62abd41e6d..8eb847dbb7 100644
--- a/orch/UDO.xml
+++ b/orch/UDO.xml
@@ -28,6 +28,17 @@ aout    <emphasis role="op">=</emphasis>  ain<emphasis role="op">*</emphasis>ka1
 afiltered Lowpass asource, kvalue1, kvalue2</programlisting>
   <para>See the entry for <link linkend="opcode"><citetitle>opcode</citetitle></link> for detailed information on UDO definition.
   </para>
+  
+<para>
+    Other opcodes that are to be used in a UDO are:
+    <itemizedlist>
+      <listitem><para><link linkend="oversample"><citetitle>oversample</citetitle></link></para>
+      </listitem>	 
+      <listitem><para><link linkend="undersample"><citetitle>undersample</citetitle></link></para>
+      </listitem>
+    </itemizedlist>
+  </para>
+  
   <para>
     You can find many ready-made UDO's (or contribute your own) at Csound's <ulink url="https://github.com/csudo/csudo"><citetitle>User Defined Opcode Database</citetitle></ulink>.
   </para>