Array containg one or more arrays containing one or two coordinate strings e.g. array('B4','D9') or array(array('B4','D9'),array('H2','O11')) or array('B4')
Get old calculated value (cached) This returns the value last calculated by MS Excel or whichever spreadsheet program was used to create the original spreadsheet file.
Note that this value is not guaranteed to refelect the actual calculated value because it is possible that auto-calculation was disabled in the original spreadsheet, and underlying data values used by the formula have changed since it was last calculated.