Format Operation Start ============================================= This command can be added by right-clicking on the "Program/Operation" heading inside "Commands" tab. It is the command that automatically becomes active at the beginning of each operation of the NC program. The necessary G and M commands and comments needed at the start of each operation are defined here. “Event Operation Start” becomes active at the beginning of each operation in the APT/CL file. This event includes :ref:`ActionOperationStart`. as standard. “ActionOperationStart” runs the :ref:`Format Operation Start`. command.