Brother MFC-9420CN - Manual (Page 126)

ControlCenter2 (For Mac OS ® X 10.2.4 or greater)
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9
You can delete an application that you have added. Just
select the Application Name and click the Delete button.
Note
This function is also available for Scan to E-mail and Scan to
OCR. The window may vary depending upon the function.
OCR (Word Processing program)
Scan to OCR converts the graphic page image data into text
which can be edited by any word processor program. You can
change the default word processor program.
To configure Scan to OCR, click on the button while holding
down the Ctrl key and select Software Button or Device
Button.
To change the word processing application, select the
destination word processing application from the Target
Application pull down list. You can add an application to the
lists by clicking the Add button. An application can be deleted
by clicking on the Delete button.
You can also configure the other settings for this selection.
If you want to scan and then crop a portion of a page after
pre-scanning the document, check Show Scanner Interface
box.