The Cross-Reference Query window lets you specify a cross-reference
  query.  A cross-reference query matches occurrences of a symbol you
  define by specifying one or several of the following selection
  attributes:

      o  Name-to specify the name of a symbol. SCA selects
         occurrences with names that match the name
         expression you provide.

      o  Usage-to restrict occurrences based on the usage of
         the symbol you pick; for example, the declarations
         of a symbol.

      o  In File-to specify the name of a file. SCA selects
         occurrences whose source position is in the file
         you specify.

      o  Type-to restrict occurrences based on the type of
         symbol you pick; for example, arguments.

      o  Domain-to restrict occurrences based on the
         symbol domain. The domain indicates the scope of a
         symbol's declaration. SCA selects occurrences whose
         symbol domain is one of those that you select.

      o  In Module-to restrict occurrences to those
         occurrences contained in the module that you
         specify.