- * The full identifier name of the prefix mapping - that is, the prefix
- * itself, such as <TT>dc</TT>, as it might be used in a qualifier
- * like <TT>dc.title</TT>.
+ * The full identifier name of the prefix mapping. That is,
+ * typically, a URI permanently allocated to a specific qualifier
+ * set, such as <TT>http://zthes.z3950.org/cql/1.0<TT>.