A post-executable is an executable file (exe) or batch file (bat) to run straight after the patching process has completed.
Post-Executable Scenarios
There are many scenarios in which you may choose to run an executable post-patch or when the patching process is complete. One reason could be to launch a DirectX 9 Runtime installer to ensure the user has the latest DX9 runtime files installed.
Post-Executables are only available for the Professional and Ultra licenses of Game Patch Creator.