What can the DIRECT OPEN key do when highlighting a CALL JOB?

• A. Pressing the DIRECT OPEN key while the cursor is highlighting the Address or the Instruction line of a CALL JOB opens its Job Content.
• B. It starts the program from the top.
• C. It compiles the subroutine into ROM.
• D. It triggers a digital output to 0.

Answer: (A)

Direct Open is a quick way to access the internal content of a CALLED subroutine. When you highlight a CALL JOB and press Direct Open, you’re opened into the Job Content—the actual sequence of instructions and data that make up that subroutine. This lets you view or edit what the job does, separate from its invocation.

This action is about inspecting or modifying the subroutine, not about executing it, compiling it into ROM, or triggering outputs. Running the program would start from the top or follow the call chain, compiling is a separate step, and triggering a digital output is a different operation entirely.