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. Refer to Printer Management Standards web page, http://www.pwg.org, for more details in the original format of the Standard Printer MIB. Additional information: For trays 2 (8550 N and up), 3 and 4 (which can reliably sense this value) the objects behave exactly the same as prtInputMediaDimFeedDirChosen. Attempting to set this object for trays 2, 3 and 4 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.