make NXmanipulator more general

base_classes/NXmanipulator.nxdl.xml

@@ -23,8 +23,7 @@
 -->
 <definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" name="NXmanipulator" extends="NXobject" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd">
     <doc>
-         Extension of NXpositioner to include fields to describe the use of manipulators
-         in photoemission experiments.
+         Extension of NXpositioner to include fields to describe the use of manipulators.
     </doc>
     <field name="name" type="NX_CHAR">
         <doc>
@@ -208,18 +207,17 @@
     </group>
     <group type="NXactuator">
         <doc>
-             Any additional actuator on the manipulator used to control an external
-             condition.
+             Any additional actuators on the manipulator.
         </doc>
     </group>
     <group type="NXsensor">
         <doc>
-             Any additional sensors on the manipulator used to monitor an external condition.
+             Any additional sensors on the manipulator.
         </doc>
     </group>
     <group type="NXpositioner">
         <doc>
-             Class to describe the motors that are used in the manipulator
+             Class to describe the motors that are used in the manipulator.
         </doc>
     </group>
     <field name="depends_on" type="NX_CHAR">