Howto use Commands section

Freddy ON7VQ

I was wondering what the Commands section is, and more precise what (or how) the use is of this section. Can anyone give me an example of the use of that section so that I can try myself?
I tried the documentation available, I googled, but could not find the explanation of that function.
Thanks for any help.
Freddy, ON7VQ

Edouard Griffiths