Shift after options:
Default - shift content only if DIV element is dropped to the non empty cell
Delete - same as "default" + shift content after element is deleted
Always - always shift table content
Shift options:
horizontal 1 - element shift can affect more rows
horizontal 2 - each row is treated separately
vertical 1 - element shift can affect more columns
vertical 2 - each column is treated separately
Overflow:
bunch - overflowed DIV will stay in last cell (default)
delete - overflow will be deleted
source - overflow will be moved to the source TD
HTMLElement - overflow will be moved to user defined TD