Run a command: Lets you enter a command to be run on startup. This can be used to perform more complex actions including running external programs. This must be a command that would make sense on a button or hotkey. You can use
Opus internal commands or external programs (passing arguments to them using the
standard control codes). If you want to run more than a simple single-line command, you can create a more complicated
user-defined command and then specify the name of the user command here.