Index: trunk/BNC/src/bnchelp.html
===================================================================
--- trunk/BNC/src/bnchelp.html	(revision 6926)
+++ trunk/BNC/src/bnchelp.html	(revision 6927)
@@ -1369,16 +1369,16 @@
 
 <p>
-While we have a plain ASCII standard for saving broadcast ephemeris in RINEX Navigation files, we don't have an equivalent standard for corrections to broadcast ephemeris. Hence BNC saves Broadcast Corrections files following its own format definition. The file name convention for Broadcast Correction files follows the convention for RINEX Version 2 files except for the last character of the file name suffix which is set to &quot;C&quot;.
-</p>
-
-<p>
-Broadcast Corrections files contain blocks of records in plain ASCII format. Each block contains a 'leading (first) record' followd by a number of 'satellite records' (exception: block VTEC).
-</p>
-<p>
-<b>Example for the 'leading record' of each block</b>
-</p>
-
-<p>
-The 'leading record' of each block contains 10 parameters. Example:
+While we have a plain ASCII standard for saving broadcast ephemeris in RINEX Navigation files, we don't have an equivalent standard for corrections to broadcast ephemeris. Hence BNC saves Broadcast Correction files following its own format definition. The file name convention for Broadcast Correction files follows the convention for RINEX Version 2 files except for the last character of the file name suffix which is set to 'C'.
+</p>
+
+<p>
+Broadcast Correction files contain blocks of records in plain ASCII format. Each block covers information about one sprecific topic and starts with an epoch record with special character '&#62;' being the first character (as we have it in RINEX Version 3).
+</p>
+<p>
+<b>The epoch record of a Broadcast Corrections block</b>
+</p>
+
+<p>
+The leading epoch record of each block contains 10 parameters. Example:
 </p>
 <pre>
@@ -1389,5 +1389,5 @@
 </p>
 <ul>
-<li>SSR message type indicator:<br>ORBIT, CLOCK, CODE_BIAS, PHASE_BIAS, or VTEC</li>
+<li>SSR message or topic descriptor, valid descriptors are:<br>ORBIT, CLOCK, CODE_BIAS, PHASE_BIAS, or VTEC</li>
 <li>Year, GPS time</li>
 <li>Month, GPS time</li>
@@ -1415,5 +1415,5 @@
 <li>15 = 10800 sec</li>
 </ul>
-<li>Number of following satellites (records) in this block</li>
+<li>Number of following records in this block</li>
 <li>Mountpoint, source/stream indicator</li>
 </ul>
@@ -1437,5 +1437,5 @@
 </pre>
 <p>
-The 'satellite records' in this block provide the following information:
+Records in this block provide the following satellite specific information:
 <ul>
 <li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
@@ -1469,5 +1469,5 @@
 </pre>
 <p>
-The satellite specific records in this block provide the following information:
+Records in this block provide the following satellite specific information:
 <ul>
 <li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
@@ -1496,13 +1496,15 @@
 </pre>
 <p>
-The satellite specific records in this block provide the following information:
+Records in this block provide the following satellite specific information:
 <ul>
 <li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
-<li>Number of Code Biases</li>
+<li>Number of Code Biases, succeeded by code specific information:</li>
+<ul>
 <li>Indicator to specify the signal and tracking mode</li>
-<li>Code Bias</li>
+<li>Code Bias [m]</li>
 <li>Indicator to specify the signal and tracking mode</li>
-<li>Code Bias</li>
+<li>Code Bias [m]</li>
 <li>etc.</li>
+</ul>
 </ul>
 </p>
@@ -1521,19 +1523,18 @@
 </pre>
 <p>
-The second record of the 'PHASE_BIAS' block contains two consistency parameters:
+The second record in this block provides the following consistency information:
 <ul>
 <li>Dispersive bias consistency indicator</li>
 <li>MW consistency indicator</li>
 </ul>
-The following records contain satellite specific information:
+Following records provide satellite specific information:
 <ul>
 <li>GNSS Indicator and Satellite Vehicle Pseudo Random Number</li>
-<li>Yaw angle</li>
-<li>Yaw rate</li>
-<li>Number of phase biases in this record<br><br>
-The following records contain phase specific information:<br><br></li>
+<li>Yaw angle [&deg;]</li>
+<li>Yaw rate [&deg;/s]</li>
+<li>Number of phase biases in this record, succeeded by phase specific information:</li>
 <ul>
 <li>Signal and tracking mode indicator</li>
-<li>Phase bias</li>
+<li>Phase bias [m]</li>
 <li>Signal integer indicator</li>
 <li>Signal wide-lane integer indicator</li>
@@ -1565,12 +1566,12 @@
 </pre>
 <p>
-The second record of the 'VTEC' block containts the following four parameters:
+The second record in this block provides four parameters:
 <ul>
 <li>Number of following records</li>
 <li>Maximum degree of spherical harmonics</li>
 <li>Maximum order of spherical harmonics</li>
-<li>Height of ionospheric layer</li>
-</ul>
-The following records in this block provide the following information:
+<li>Height of ionospheric layer [m]</li>
+</ul>
+Subsequent records in this block provide the following information:
 <ul>
 <li>Spherical harmonic coefficients C and S, sorted by degree and order (0 to maximum)</li>