I need help with L-Parametric System

I have some queries regarding L-Parametric System

  1. How to implement L-Parametric System through grammar?
  2. How to detect grammar with drawing tree?
  3. How to implement L-Parametric System for user based GUI?

Is this homework? If not, you really need to describe in more detail the problem you’re trying to solve - perhaps starting with what you mean by “L-parametric system”… do you mean a Lindenmayer system?