I can be dragged only by this handle

You can drag me around…

…but you can't drag me by this handle.

Allow dragging only when the cursor is over a specific part of the draggable. Use the `handle` option to specify the jQuery selector of an element (or group of elements) used to drag the object.

Or prevent dragging when the cursor is over a specific element (or group of elements) within the draggable. Use the `cancel` option to specify a jQuery selector over which to "cancel" draggable functionality.