It adjusts the display of the item being moved on other elements (which are flown). It indicates the scrolling speed of the display once scrolling begins. It indicates how many pixels the mouse must exit the window to cause scrolling of the display. When set to true (the default), the display will scroll if the item is moved outside the viewable area of the window. It is used to group sets of draggable and droppable items, in addition to droppable's accept option. It indicates the duration of displacement (in milliseconds) after which the element returns to its original position (see options.revert). It indicates whether the element is moved back to its original position at the end of the move. If set to true, all droppable positions are calculated on every mousemove. Opacity of the element moved when moving. It prevents iframes from capturing the mousemove events during a drag.
It allows for a helper element to be used for dragging display. If specified, restricts dragging from starting unless the mousedown occurs on the specified element(s). It snaps the dragging helper to a grid, every x and y pixels. The number of pixels that the mouse must be moved before the displacement is taken into account. Items cannot be moved until this function is enabled (using the draggable ("enable") instruction). It disables the ability to move items when set to true.
The displacement may begin after that time. It specifies the delay in milliseconds, after which the first movement of the mouse is taken into account.
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