DocuMate 252 Scanner User’s Guide 91Scanning with the TWAIN Interface from PaperPort• Define page size—Click this option to activate the Definebutton. Then click the Define button to see the Define pagesize dialog box for selecting a specific page size.Click Standard, click the menu arrow and choose a pagesize from the list, or click Custom and enter the horizontaland vertical page dimensions in the boxes. The maximumsize is 8.5" x 14". The units of measurement can be inchesor millimeters. Click the name of the units, inches or mm(millimeters), to toggle between them.Click OK.The currently selected page size appears in the middle ofthe TWAIN interface on the lefthand side.The Define page size option cannot be used withAutoCrop to original.• AutoScan on document insertion—Your XeroxDocuMate 252 scanner includes AutoLaunch technologythat senses when an item is inserted into the paper feedand starts scanning immediately. Select this option to turnon the AutoLaunch feature. The item is scanned with thecurrent settings on the TWAIN interface. If this option is notselected, the scanner waits for you to click the Scan button.To scan from the TWAIN interface:1. Select the options you want from the TWAIN interface, thenload the documents with their tops into the AutomaticDocument Feeder. To scan a single side, insert the documentsface down. To scan both sides, either side can be face up.