[Rtk-users] what does ggo file do?

[나윤호]

in the RTK git hub
there is a file,

RTK/applications/rtkforwardprojections/rtkforwardprojections.ggo

I don't know how to use this.

what I'm guessing is in the rtkforwardprojections.cxx, there is a script
written like this

GGO(rtkforwardprojections, args_info);

and it is something to do with that script.

what actually does that file do?
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