The two files that can be created by XREFANALYZER are titled XREFFILES/<code file name>/DECS and XREFFILES/<code file name>/REFS. The code file name is the title of the code file that was generated by the compiler when the XREF file was created. If compiled through the Command and Edit (CANDE) message control system (MCS), the code file name normally has the prefix OBJECT/.

The DECS file contains information about all declarations in a file. The REFS file contains information about the references to all identifiers in a program.

These files are used by the MCP/AS Editor and by SYSTEM/INTERACTIVEXREF to interactively access the cross-reference information for a program. XREFANALYZER includes version information in the XREF files, so that when INTERACTIVEXREF is executed, if it finds that the version information is not compatible, an error message is displayed indicating that the XREFFILES were created by an incompatible XREFANALYZER.