Index: trunk/BNC/bnchelp.html
===================================================================
--- trunk/BNC/bnchelp.html	(revision 1984)
+++ trunk/BNC/bnchelp.html	(revision 1985)
@@ -144,4 +144,5 @@
 &nbsp; &nbsp; &nbsp; 3.12.1 <a href=#logfile>Log</a><br>
 &nbsp; &nbsp; &nbsp; 3.12.2 <a href=#throughput>Throughput</a><br>
+&nbsp; &nbsp; &nbsp; 3.12.3 <a href=#latency>Latency</a><br>
 3.13. <a href=#bottom>Bottom Menu Bar</a><br>
 &nbsp; &nbsp; &nbsp; 3.13.1. <a href=#streamadd>Add Stream - Coming from Caster</a><br>
@@ -974,5 +975,5 @@
 <p><a name="logs"><h4>3.12. Logging</h4></p>
 <p>
-A tabs section on the bottom of the main window provides online controle of BNC's activities. Tabs are available to show the records saved in a logfile and for a plot to controle the bandwidth consumtion.
+A tabs section on the bottom of the main window provides online controle of BNC's activities. Tabs are available to show the records saved in a logfile, for a plot to controle the bandwidth consumtion and for a plot showing stream latencies.
 </p>
 <p><a name="logfile"><h4>3.12.1 Log</h4></p>
@@ -984,4 +985,9 @@
 <p>
 The bandwidth consumtion per stream is shown in the 'Throughput' tab in bits per second (bps) or kilo bits per second (kbps).
+</p>
+
+<p><a name="latency"><h4>3.12.3 Latency</h4></p>
+<p>
+The latency of observations in each incoming stream is shown in the 'Latency' tab in milliseconds. Streams not carrying observations (i.e. those providing only broadcast ephemeris messages) are not considered here.
 </p>