Specifies whether the page area is intended to be blank and therefore may result in special treatment by the output device.Reference_Syntax.blank = “0 | 1″
• 0 (default)
• The page area is intended to be blank, and may be subject to special treatment by the output device.For example, a printer may charge the user on a per-printed-page basis. The user does not wish to be charged for blank backsides of printed pages on a duplexed job. This property permits the blank backsides of the document to be marked blank with the result that the processing application must not render any content on the backside and the printer may receive special instructions to ensure that the blank backside is not counted towards the user’s charges.