Capturing or Saving Image from Grasshopper.

[Mat]

I'm still new to this, bare with me and thanks. But just wondering how
to "save as .jpg" or some image file, from grasshopper? Like when you
see tutorials and they give a screen shot of the family tree of their
grasshopper string. I would just screen shot it, but its so large I
can't get good resolution, is that how they do it? Thanks.