code: public void allowASCII(boolean allow) {
          this.allowASCII = allow;
          ISO9660NamingConventions.FORCE_ISO9660_CHARSET = !allow;
          if (allow) {
              System.out.println("Warning: Allowing the full ASCII character set breaks ISO 9660 conformance.");
          }
      }
docs: Allow ASCII for filenames and other strings
  
  @param allow Whether to allow the ASCII character set for filenames and other strings