This object enables a printing mode wherein the printer compresses selected scanlines of raster image data as they are received and holds them in compressed form until they are to be printed. This allows particular jobs to be processed with less memory, but often reduced performance as well. On some Printers, turning this feature Off is referred to as 'PerformanceEnhancement'. When xcmInterpPageProtect is set to Off, some complex jobs may not print successfully with minimum memory. The ScanlineCompaction feature enables printing some complex jobs without resorting to reserving additional memory by turning on the PageProtect option or installing additional memory.