Updated pp_touch_point.h docs in preparation for fixing the C++ docs (which are a bit lean).

ppapi/api/pp_touch_point.idl

Index: ppapi/api/pp_touch_point.idl
===================================================================
--- ppapi/api/pp_touch_point.idl	(revision 157987)
+++ ppapi/api/pp_touch_point.idl	(working copy)
@@ -5,48 +5,49 @@
 
 
 /**
- * This file defines the API to create a touch-point.
+ * This file defines the API to create a touch point or position where fingers        
+ * makes contact with touch screen device.
  */
 
 /**
- * The <code>PP_TouchPoint</code> represents all information about a single
- * touch point, such ase position, id, rotation angle, and pressure.
+ * The <code>PP_TouchPoint</code> struct represents all information about a
+ * single touch point, such ase position, id, rotation angle, and pressure.
  */
 [assert_size(28), returnByValue]
 struct PP_TouchPoint {
   /**
-   * The identifier for this TouchPoint. This corresponds to the order
-   * in which the points were pressed. For example, the first point to be
-   * pressed has an id of 0, the second has an id of 1, and so on. An id can be
-   * reused when a touch point is released.  For example, if two fingers are
-   * down, with id 0 and 1, and finger 0 releases, the next finger to be
-   * pressed can be assigned to id 0.
+   * This value represents the identifier for this TouchPoint. The id
+   * corresponds to the order in which the points were pressed. For example,
+   * the first point to be pressed has an id of 0, the second has an id of 1,
+   * and so on. An id can be reused when a touch point is released.  For
+   * example, if two fingers are down, with id 0 and 1, and finger 0 releases,
+   * the next finger to be pressed can be assigned to id 0.
    */
   uint32_t id;
 
   /**
-   * The x-y pixel position of this TouchPoint, relative to the upper-left of
-   * the instance receiving the event.
+   * This value represents the x and y pixel position of this TouchPoint
+   * relative to the upper-left of the module instance receiving the event.
    */
   PP_FloatPoint position;
 
   /**
-   * The elliptical radii, in screen pixels, in the x and y direction of this
-   * TouchPoint.
+   * This value represents the elliptical radii, in screen pixels, in the x
+   * and y direction of this TouchPoint.
    */
   PP_FloatPoint radius;
 
   /**
-   * The angle of rotation in degrees of the elliptical model of this TouchPoint
-   * clockwise from "up."
+   * This value represents the angle of rotation in degrees of the elliptical
+   * model of this TouchPoint clockwise from "up."
    */
   float_t rotation_angle;
 
   /**
-   * The pressure applied to this TouchPoint.  This is typically a
-   * value between 0 and 1, with 0 indicating no pressure and 1 indicating
-   * some maximum pressure, but scaling differs depending on the hardware and
-   * the value is not guaranteed to stay within that range.
+   * This value represents the pressure applied to this TouchPoint.  This value
+   * is typically between 0 and 1, with 0 indicating no pressure and 1
+   * indicating some maximum pressure. Scaling differs depending on the
+   * hardware and the value is not guaranteed to stay within that range.
    */
   float_t pressure;
 };