There is a proposed edit to provide users with the following guideline when choosing the high-energy-astrophysics tag. This is the message that would pop up when someone started typing "high-ener..."
Questions touching the field of elementary particle physics, which require high energies to be studied. Use this tag if you are asking about quarks, gluons, mesons, hadrons, leptons, etc.
Does this do a good job of advising users when to use their tag? Could a better one be formulated?
I chose to reject the edit because I felt there should be more emphasis on high as opposed to low energy, and less emphasis on naming particles. Questions about electrons are not necessarily about high energy astrophysics just because electrons are leptons.
How do others feel?