Proximity gives the ability to locate results with greater
precision. The Search Appliance input form gives you several options to
control the search proximity:
line - All query terms must occur on the same line
sentence - Query items must all reside within the same sentence
paragraph - Within the same paragraph or text block
page - All items must occur within same HTML document (the default)
Note that any value other than page requires post-processing -
which can take some time - and thus Allow Post-Processing
(here) would need to be enabled. Thus
if Allow Post-Processing is not enabled, the Proximity
widget may not be shown in the search interface.