Indicates if the PDL processing sub-system has made
marks on the current page and the source subsystem has
been idle for a device specific amount of time.
Additional information:
LaserJet 4500 will set this object to eTrue when a personality has made marks on the current
page, the personality timeout has expired and no data is pending on another I/O channel. Once set to eTrue,
if more data is then recieved on the same channel this object will be set to eFalse until the conditions are met
again.