PCA Command
    Displays the current language setting. The language setting
    determines how symbol names are parsed. The language setting
    is initially determined from the language of the main routine in
    the user program. You change it with the SET LANGUAGE command.
    Format
      SHOW LANGUAGE
1 – Examples
  PCAC> SHOW LANGUAGE
  Language: FORTRAN
      This command shows that FORTRAN is the currently set language.