SpreadJS allows users to select cells, rows, columns, or multiple ranges while working in spreadsheets. You can also deselect specific selections via pressing the Ctrl or Cmd key. This facilitates users in saving both time and efforts especially when a large number of cells in a worksheet are selected and they need to deselect only some specific cells from the selected area without having to start all over again.
For more information on selection and deselecting a selection in the worksheet, see Working with Selections.