• A control file: on z/OS, in or identified with the SYSIN DD statement; on z/VSE, in SYSIPT or identified with an ASSIGN SYSIPT statement; on CMS, a file with a file type of CNTL. The control file contains statements that specify the library to scan, the source files to include or exclude, and the reports to create. For details on the control statements see ASMXREF Control Statements.
• A token statement file (XRFTOKN) that contains the tokens you have specified for the TWU and SOR reports. For details on the token statements, see ASMXREF Token Statement.
• A language and default token file (XRFLANG) that contains:
  • The languages supported by ASMXREF.
  • The language-specific verbs excluded from the ASMXREF scan phase.
  • The default token statements used by the TWU and SOR reports. You can turn off the processing of the default tokens with the TOKEN NODEFLT statement, as described in ASMXREF Token Statement.

  For a description of the XRFLANG file, see ASMXREF XRFLANG Statements.

ASMXREF scans the requested source files and writes the necessary data to an intermediate data file for each requested report.