code: function adjustStartPoint(rowIndex, cellIndex, cell, isSelectedCell) {
              if (rowIndex === _startPoint.rowPos && _startPoint.colPos >= cell.cellIndex && cell.cellIndex <= cellIndex && !isSelectedCell) {
                  _startPoint.colPos++;
              }
          }
docs: Process validation and adjust of start point if needed
  
  @param {int} rowIndex
  @param {int} cellIndex
  @param {object} cell
  @param {bool} isSelectedCell