Fujitsu scansnap ix500 Operator's Manual page 417

Creating Scanned Images Depending on Intended Use (for Mac OS Users)
3.
Select the [Set the marked text as a keyword for the PDF file] checkbox.
Target marked sections
Select [First marked section] to perform text recognition and set a keyword for the
PDF file only for the character strings in the first marked section, and [All marked
sections] for all marked sections.
ATTENTION
Do not select [First marked section] when the text orientation of your document is vertical.
HINT
The following explanation is for when you select [First marked section]:
Select this button to set a character string such as a title of a document as a keyword for the
PDF file.
Example: When only the title of a document is marked, the marked character string is set as a
keyword for the PDF file, and the PDF file becomes searchable by the title character string.
When multiple marked sections exist in line, the marked character string closest to the top of
the document is set as a keyword.
Example: In the following case, the character string in marked section B, which is higher than
marked section A, is set as a keyword.
Marked section A
Marked section B
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