From 55687373c9f517494b452c91a08745df6d7315d9 Mon Sep 17 00:00:00 2001
From: ldam <ldam@passcal.nmt.edu>
Date: Thu, 30 May 2024 19:30:02 -0600
Subject: [PATCH] documentation for zoom out

---
 .../documentation/13 _ Ruler and Zooming.help.md          | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sohstationviewer/documentation/13 _ Ruler and Zooming.help.md b/sohstationviewer/documentation/13 _ Ruler and Zooming.help.md
index daf89a528..768e4c575 100644
--- a/sohstationviewer/documentation/13 _ Ruler and Zooming.help.md	
+++ b/sohstationviewer/documentation/13 _ Ruler and Zooming.help.md	
@@ -16,7 +16,9 @@ all the TPS channels. Ctr/cmd + Click on TPS plot will work the same.
 ---------------------------
 
 # Zooming
-Shift + Click to mark the first zooming point, then Shift + click again to mark 
+
+## Zoom in
+Shift + Click on a plot to mark the first zooming point, then Shift + click again to mark 
 the second zooming point to zoom the area between two zooming points.
 
 The zooming task will be performed in the area corresponding to zooming triggering 
@@ -31,3 +33,7 @@ be triggered from TPS dialog.
 <br />
 <br />
 <br />
+
+## Zoom out
+Shift + Click on the left side of a plot to zoom out one level, which means
+undoing one zoom in. 
\ No newline at end of file
-- 
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