Controls the format used to provide query highlighting information for PDF
links.
Acrobat 7+: Uses the search parameter as defined
in the PDF Open Parameter specification. Supported by Adobe Acrobat
7 (January 2005) and all later versions.
Legacy: Uses the xml Highlight File Format syntax,
which has been deprecated by Adobe. It was disabled by default in
Acrobat Reader 9 (July 2008), and completely removed from Acrobat
Reader X (Nov 2010) and all later versions.
This is a temporary setting is for compatibility, and will be removed
in a future version of the Search Appliance (forcing Acrobat 7+
behavior).
