OmniPage Pro can have one working document open at a time. You are prompted to close the current document if you attempt to open another.
Choose Open... in the File
menu or click the Open button
in the Standard toolbar.
The Open dialog box appears.
Select the file type and folder location of the file you want to open.
You can open an image file or an OmniPage Document.
Double-click a file to open it.
An image file opens in the image view. An OmniPage Document opens with its original image in the image view and recognized text, if any, in the text view.