diff --git a/doc/user/mesure.htm b/doc/user/mesure.htm
index 84e97de6..6fe973f9 100644
--- a/doc/user/mesure.htm
+++ b/doc/user/mesure.htm
@@ -93,6 +93,11 @@ This object knows about the following parameters:
  max count in scan - 2* min count in scan. 
 <dt>fastscan 
 <dd>0 or 1: switches fastscan mode.
+<dt>psd
+<dd>0 or 1: switches on PSD mode for measuring with the area detector. Currently this is mapped
+ to doing a tricsscan with the scan parameters as evaluted from the two theta range table. The 
+ psi, compact and weak flags are ignored in PSD mode. Only a log file is openend, the rest of
+ the file management is done by tricsscan. 
 </dl>
 </p>
 <p>
@@ -102,9 +107,11 @@ commands are supported:
 <dl>
 <dt>dataset table list
 <dd>prints the content of the table.
-<dt>dataset table add start end scanmode step
-<dd>configures two theta range. start and end define the two theta range. scanmode can either
- be om for omega scans or o2t for omega 2 theta scans. step is the step width to use.
+<dt>dataset table add end scanvar step np
+<dd>configures a two theta range. The end parameter describes the end of the two theta range to
+ which these parameters can be applied. Scanmode can either
+ be om for omega scans or o2t for omega 2 theta scans. step is the step width to use. np is the
+ number of points in the scan.
 <dt>dataset table del num
 <dd>deletes the entry num from the table. Counting starts with 0!
 <dt>dataset  table clear
@@ -116,7 +123,7 @@ When there is no two theta range configured for a given two theta value, the ome
 <p>
 dataset supports two geometries: the first is the usual bisecting geometry. The
  second is the normal beam geometry where the detector is moved out of plane.
- This si accounted for by two switches:
+ This is accounted for by two switches:
 <dl>
 <dt>dataset bi
 <dd>switches into bissectiong mode. This is the default.