I.R.I.S. Readiris 14 for Mac User Guide - Manual (Page 47)

Section 4: Scanning and Opening Documents
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Should you want to abort the loading process, press Esc on your
keyboard.
Tip: when loading multipage image files (TIFF images) and PDF documents,
you can define the page range (in case you only need a certain chapter of a
document for instance).
Note: when you click the File button on the top toolbar after you
saved your current document, you are prompted whether you want
to delete the current document or not. Click No to add image files to
the recognized document or click Yes to start a new document.
Other ways of opening image files
 Drag image files to the Readiris icon to open them.
 Ctrl-click any image file you want to open, point to Open With
and click Readiris. The Readiris software will open and display
the image.
 Readiris can be set as target application of your scanner, if your
scanner supports that feature. That way you scan documents on
your scanner and transfer them to Readiris, just by clicking your
scanner buttons. See your scanner documentation for more
information.
Tip: to process batches of images files, see the topics Automatic Processing
and Batch Processing.