This release of the Tachyon Operating System includes the IEFBR14 utility. If IEFBR14 is specified in the PGM parameter of a JCL EXEC statement, the step will end with a condition code 0 without invoking the Tachyon Instruction Emulator.
If you have a license for the Tachyon File Tools, you can invoke the linkage editor and the IEBUPDTE utility through JCL.