Index: trunk/BNC/bnchelp.html
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--- trunk/BNC/bnchelp.html	(revision 2599)
+++ trunk/BNC/bnchelp.html	(revision 2600)
@@ -174,5 +174,7 @@
 &nbsp; &nbsp; &nbsp; 3.11.2.3 <a href=#ppptropo>Estimate Tropo</a><br>
 &nbsp; &nbsp; &nbsp; 3.11.2.4 <a href=#pppglo>Use GLONASS</a><br>
-&nbsp; &nbsp; &nbsp; 3.11.3 <a href=#pppsigma>Sigma Code</a><br>
+&nbsp; &nbsp; &nbsp; 3.11.3 <a href=#pppoptcont>Options cont'd</a><br>
+&nbsp; &nbsp; &nbsp; 3.11.3.1 <a href=#pppsigma>Sigma Code</a><br>
+&nbsp; &nbsp; &nbsp; 3.11.3.2 <a href=#pppaverage>Averaging</a><br>
 &nbsp; &nbsp; &nbsp; 3.11.4 <a href=#pppnmearef>Plot Origin</a><br>
 &nbsp; &nbsp; &nbsp; 3.11.5 <a href=#pppnmeaout>NMEA</a><br>
@@ -1142,5 +1144,10 @@
 </p>
 
-<p><a name="pppsigma"><h4>3.11.3 Sigma Code - mandatory if 'Use Phase Obs' is set</h4></p>
+<p><a name="pppoptcont"><h4>3.11.3 Options cont'd</h4></p>
+<p>
+You may like to introduce a specific ratio between the sigmas for code and phase observations. You may also like to output average position values.
+</p>
+
+<p><a name="pppsigma"><h4>3.11.3.1 Sigma Code - mandatory if 'Use Phase Obs' is set</h4></p>
 <p>
 When 'Use phase obs' is set in BNC the PPP solution will be carried out using both, code and phase observations. A sigma of 5.0 m for code observations and a sigma of 0.02 m for phase observations (defauls) is used to combine both types of observations. 
@@ -1153,4 +1160,12 @@
 <p>
 Note that the 'Sigma code' you enter must be greater than 0.3 m and less than 50.0 m.
+</p>
+
+<p><a name="pppaverage"><h4>3.11.3.2 Averaging - optional</h4></p>
+<p>
+Enter the length of a sliding time window in minutes. BNC will continuously output moving average positions and their RMS as computed from those individual positions obtained most recently throughout this period. RMS values presented for XYZ coordinates are bias reduced while the RMS values for Nort/East/Up displacements are not.
+</p>
+<p>
+Entering any positive value up to 1440 (24h mean value) is allowed. An empty option field (default) means that you don't want BNC to output moving average positions into the log file.
 </p>
 
@@ -1892,4 +1907,5 @@
 <tr><td>pppGLONASS=0</td><td>PPP Client: Use GLONASS</td></tr>
 <tr><td>pppSigmaCode=0</td><td>PPP Client: Sigma for Code observations</td></tr>
+<tr><td>pppAverage=</td><td>PPP Client: Lenght of time window for moving average</td></tr>
 <tr><td>pppOrigin=</td><td>PPP Client: Origin of time series plot</td></tr>
 <tr><td>pppRefCrdX=</td><td>PPP Client: X coordinate of plot origin</td></tr>