Test lindenmayer installation

How do I test the installation of the Lindenmayer package on Racket v. 9.2. in Windows 10? I just want to see if my installation works, so that it is worthwhile learning it.

Maybe try the second example from the documentation out?

#lang lindenmayer racket
 
## axiom ##
X
 
## rules ##
X -> F[+X]F[-X]+X
F -> FF
 
## variables ##
n=7
θ=20
 
=============================================
(require lindenmayer/turtle)
(provide (all-from-out lindenmayer/turtle) X)
(define (X turtles variables) turtles)

It should work after you've run raco pkg install lindenmayer.

@shhyou just fixed a bug so you may need to raco pkg update lindenmayer.