Description: Returns or controls the manner in which the device performs I/O data buffering. I/O data buffering allows additional print job data to be buffered by the I/O sub- system in an effort to allow the computer sending the data to perform other tasks and to keep the PDL processing sub-system busy. eOff, I/O buffering is disabled. When eOn, I/O buffering is enabled and the IO-BUFFER-SIZE object controls the amount of memory set aside for I/O buffer. When eAuto, I/O buffering is enabled and the I/O buffer size is determined automatically by the device and the IO-BUFFER-SIZE object is not used. Additional information: In a PCL-only printer, all values may be set at any time. When there is less than 4M of memory installed, setting this object to eOn or eAuto will cause to be returned. At exactly 4M of memory, eOn is not a valid setting. At more than 4M of memory any setting is valid, subject to the conditions listed in the interactions below.