Description: This object provides the value of the declared dimension, in the feed direction, of the media that is (or, if empty, was or will be) in this input sub-unit. The feed direction is the direction in which the media is fed on this sub-unit. This dimension is measured in input sub-unit dimensional units (prtInputDimUnit). If this input sub-unit can reliably sense this value, the value is sensed by the printer and may not be changed by management requests. Otherwise, the value may be changed. The value (-1) means other and specifically means that this sub-unit places no restriction on this parameter. The value (-2) indicates unknown. Additional information: For trays 2 and 3 (which can reliably sense this value) the objects behave exactly the same as prtInputMediaDimFeedDirChosen. Attempting to set this object for trays 2 and 3 will cause to be returned. The default values assume the trays are configured for letter size paper. For tray 1 the value is the dimension for the media size currently declared. For the envelope feeder (tray 4) the value is the dimension for the media size currently declared. Valid values are 63000 to 140000 if prtInputDimUnit is ePtenThousandthsOfInches and 160000 to 356000 if prtInputDimUnit is ePmicrometers. Valid values for the envelope feeder are 63000 to 10000.