Selected Cells is one of the System Reports provided by AdapTable.
As the name implies, it exports all cells which have been selected in the Grid.
This includes non-contiguous blocks which AdapTable will render according to how they appear in the Grid.
(To select multiple cell ranges ensure enableRangeSelection is set to true in Grid Options).
In this demo we have pre-selected 3 ranges (using the selectCells method of AdapTable's Grid Api - run the report to see how they export.