-Matches and targets are associated with specific contexts. A target
-may use a variety of criteria to process a request, and may need to
-look them up in the SFA database. The 'context' contains an xpath
-expression that isolates the items that a match refers to. The XML
-spec corresponding to this expression corresponds to an abstract
-database schema defined as part of the library. SFA is responsible for
-evaluating this expression, obtaining the data items that the match
-needs and providing them to the match at the time of evaluation.
+Matches and targets are associated with specific contexts. A target may use a
+variety of criteria to process a request, and may need to look them up in the
+SFA database. The 'context' contains an xpath expression that isolates the
+items that a match or target may refer to. For example, if a match needs access
+to the nodes corresponding to a slice's site, then the context may be '/sfa/slice[@name=/context/slice/@name]/nodes'.
+