This element surounds Adobe Acrobat text operations and provides the character based
highlight position associated with each text character found in the element. This element is
generated on for every text operation only when the associated option named Generate Acrobat
Highight Positions is set to true. This position information can be used to generate an Adobe
highlight file to highlight terms when displaying a PDF file in Acrobat as defined in the Adobe
technical note titled HighlightFileFormat.pdf. Only text inside this element can be highlighted
by Acrobat. Note that the Acrobat highlighting feature has numerous anomolies that may cause the
resulting highlight to either not be shown or to bleed into other text.