Flow of Mail Box Operations 2-192Introduction to the Mail Box Functions To specify a document size:❑ Press [Document Size Select].❑ Select the document size press [Done].IMPORTANT• The Auto (Automatic Document Size Selection) mode cannot be used with the Booklet Scanning,Original Frame Erase, Book Frame Erase, or Image Combination mode.• You cannot select [Auto] when scanning the following types of originals. Specify the size of thedocument manually.- Nonstandard size originals- Highly transparent originals, such as transparencies- Originals with an extremely dark background- A6R, and smaller originalsNOTETo select an inch paper size, press [Inch-size].