Fast Query
Fast queries are a subset of the XML Query language, enabling users to run queries more quickly. A fast query can be used when the exact path to the information is known. A fast query accepts single slashes, nodes, and brackets. It is used for returning a single value, does not accept attributes, and cannot be used with Multiple Query Matching.
Examples of fast queries:
lr.xmlGetValues("Xml={CdCatalog}",
"ValueParam=OutputParam",
"FastQuery=/catalog/cd[1000]/title",
LAST );
lr.xmlExtract("Xml={CdCatalog}",
"XMLFragmentParam=OutputParam",
"FastQuery=/catalog/cd[5000]",
LAST );