anchor.diff:  
   The __drop criteria__ is similar to __drag over criteria__, but it is executed when the user has dropped the data by releasing the mouse button. The script gets the `drop` event as a parameter named `event`. Returning `false` will prevent the drop and no drop event is fired on the server side.
   
  +=== CSS Style Rules
  +
  +When dragging data over a drop target and the drag over criteria passes, a style name is applied to indicate that the element accepts drops. This style name is the primary style name with `-drag-center` suffix, e.g. `v-label-drag-center`.
  +
   ////
   TODO Add an example of drag over criteria and drop criteria
   ////
   
  -=== 
  +===
   
   ////
   TODO add back when supported with new API ?
  
positive.code: user-select: none;
  ----
  ====
  
  [[advanced.dragndrop.drophandler]]
  == Drop Target
  
negative.code: });
  ----
  
  ==== CSS Style Rules
  
  When dragging data over a drop target Grid's row, depending on the drop mode and the mouse position relative to the row, a style name is applied to the row to indicate the drop location.
  `v-grid-row-drag-center` indicates ON_TOP, `v-grid-row-drag-top` indicates ABOVE and `v-grid-row-drag-bottom` indicates BELOW locations.
  
  (((range="endofrange", startref="term.advanced.dragndrop")))
  
  
  