When my opponent is serving in squash, if I want to return the serve, can I volley this ball back to them? That is, without the ball hitting the floor (opponent serves > front wall > I volley the ball back).
If yes, do I have to stay within my own serving box? How many of my feet have to remain in the box, one or both?
If no, can I cross the T-line in front of my box if I keep one foot in it?