From 27c3632afd46777fdd1e775494a1c647d94453e9 Mon Sep 17 00:00:00 2001
From: oguyon <oliv.guyon@gmail.com>
Date: Fri, 26 Jul 2024 01:00:02 -1000
Subject: [PATCH] zpo

---
 pages/cacao/cacao_wfsref.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pages/cacao/cacao_wfsref.md b/pages/cacao/cacao_wfsref.md
index 1f90d26..845f2d9 100644
--- a/pages/cacao/cacao_wfsref.md
+++ b/pages/cacao/cacao_wfsref.md
@@ -40,6 +40,13 @@ cacao-aorun-071-zpo start
 
 ### 2.3. Applying WFS-space offset to WFS reference
 
+ZPO is applied by subtracting aol_wfszpo from aol_wfsref, with the result written in aol_wfsrefc.
+
+```bash
+cacao-fpsctrl setval acquWFS WFSrefcmult 1.0
+cacao-fpsctrl setval acquWFS WFSrefcgain 0.0
+cacao-fpsctrl setval acquWFS comp.WFSrefc ON
+```