The top and right edges of your document should be against the edges of the scanner glass. To replace the cover, insert the cover's metal posts into the scanner and gently push the cover down. The software to use is called TextBridge. Find the TextBridge icon and double-click it to launch the application. The TextBridge window appears.
Most text documents are Portrait-oriented.
Click Landscape if your document is not, or click Auto if you are scanning a mixture. For multiple-column documents, select Auto Zone. For regular documents, select None. If your document contains photographs or halftone images, select Ignore Halftones. Otherwise, the scanner will attempt to recognize the photographs as text.