add description of hing point translation

Author: MarAlder

schema/cpacs_schema.xsd

@@ -8275,19 +8275,18 @@ cpacs@dlr.de
             <xsd:appinfo>
                 <sd:schemaDoc>
                     <ddue:summary>
-                        <ddue:para>controlSurfaceHingePointType</ddue:para>
+                        <ddue:para>Hinge point</ddue:para>
                     </ddue:summary>
                     <ddue:remarks>
                         <ddue:content>
-                            <ddue:para>The deflection path of a control surface is described
-                                with respect to two hinge points - one at the inner border of
-                                the control surface and one at the outer border of the control
-                                surface. Those two points are defined using the xsi and relative
-                                height coordinates of the parent. Therefore those points can also
-                                lay outbound of the control surface. Those two points defined
-                                the hinge line, which is a straight line between the two points.
+                            <ddue:para>The deflection path of a control surface is described with respect to two hinge points - 
+                                one at the inner border of the control surface and one at the outer border of the control surface.
+                                These two points are defined by the xsi and relative height coordinates of the parent.
+                                In addition, a translation (with respect to the wing coordinate system) can be applied.
+                                Therefore they can also be defined outside of the control surface. 
+                                These two points define the hinge line, which is a straight line between them.
                             </ddue:para>
-                            <ddue:para>An example can be found below:</ddue:para>
+                            <ddue:para>An example is shown below:</ddue:para>
                             <ddue:mediaLink>
                                 <ddue:image xlink:href="path"/>
                             </ddue:mediaLink>