Index: trunk/BNC/bnchelp.html
===================================================================
--- trunk/BNC/bnchelp.html	(revision 2088)
+++ trunk/BNC/bnchelp.html	(revision 2089)
@@ -945,5 +945,5 @@
 <p><a name="pppphase"><h4>3.11.3 Use phase obs - optional</h4></p>
 <p>
-By default BNC applies a PPP solution using an ionosphere free P3 linear combination of code observations. Tick 'Use phase obs' to switch to an ionosphere free L3 linear combination of phase observations.
+By default BNC applies a PPP solution using an ionosphere free P3 linear combination of code observations. Tick 'Use phase obs' for an ionosphere free L3 linear combination of phase observations.
 </p>
 
Index: trunk/BNC/bncwindow.cpp
===================================================================
--- trunk/BNC/bncwindow.cpp	(revision 2088)
+++ trunk/BNC/bncwindow.cpp	(revision 2089)
@@ -387,5 +387,5 @@
   _pppMountLineEdit->setWhatsThis(tr("<p>Specify a mountpoint if you want BNC to derive coordinates for the affected receiver position through a PPP solution.</p>"));
   _pppStaticCheckBox->setWhatsThis(tr("<p>By default BNC considers the rover position as mobile.</p><p>Tick 'Static' to consider a static observation sitatuion and adapt appropriate filter characteristics for that.</p>"));
-  _pppUsePhaseCheckBox->setWhatsThis(tr("<p>By default BNC applies a PPP solution using an ionosphere free P3 linear combination of code observations.</p><p>Tick 'Use phase obs' to switch to an ionosphere free L3 linear combination of phase observations.</p>"));
+  _pppUsePhaseCheckBox->setWhatsThis(tr("<p>By default BNC applies a PPP solution using an ionosphere free P3 linear combination of code observations.</p><p>Tick 'Use phase obs' for an ionosphere free L3 linear combination of phase observations.</p>"));
   _pppEstTropoCheckBox->setWhatsThis(tr("<p>By default BNC does not introduce troposphere parameters when estimating coordinates.</p><p>Tick 'Estimate tropo' to introduce troposphere parameters when estimating coordinates.</p>"));