Hi @Bubo,
there’s no official support for snippet yet but there is an unofficial way of doing it that definitely works now, although may change in the future once I figure out how to make it super simple to operate.
However, if you’re already into Emacs or Atom, you’ll likely find it intuitive even at this raw level.
For more info see: https://github.com/samaaron/sonic-pi/issues/587