Improve tool tip for the new DocBook MathML-prefix option.

diff --git a/src/frontends/qt/ui/OutputUi.ui b/src/frontends/qt/ui/OutputUi.ui
index ba04619cedca44a4d2ce0506a5e49991e24e94d6..7aa75a70d645b7449ca25d0a57dee4532dad1c74 100644 (file)
--- a/src/frontends/qt/ui/OutputUi.ui
+++ b/src/frontends/qt/ui/OutputUi.ui
@@ -100,7 +100,7 @@
          </font>
         </property>
         <property name="toolTip">
-         <string>Namespace prefix to use for MathML formulae.</string>
+         <string>Namespace prefix to use for MathML formulae. For instance, with the &lt;code&gt;m&lt;/code&gt; prefix, the MathML tags will be output like &lt;code&gt;m:math&lt;/code&gt;.</string>
         </property>
         <item>
          <property name="text">