Change WBT doc to backup tracks before erasing unit.

diff --git a/xmldoc/formats/wbt.xml b/xmldoc/formats/wbt.xml
index 3664d0dacb6b7f0168e3dd9cf94482b7c79128f7..fb6a9625629bb24dd3333cb056769bc7790d394c 100644 (file)
--- a/xmldoc/formats/wbt.xml
+++ b/xmldoc/formats/wbt.xml
@@ -4,6 +4,6 @@
 </para>
 <example id="wbt-on-macos">
   <title>Command showing WBT-200 download and erase over Bluetooth on Mac OS X</title>
-  <para><userinput>gpsbabel -i wbt,erase -f /dev/cu.WBT200-SPPslave-1 -o gpx -F out.gpx</userinput></para>
+  <para><userinput>gpsbabel -t -w -i wbt,erase -f /dev/cu.WBT200-SPPslave-1 -o gpx -F out.gpx</userinput></para>
 </example>