@Article@

/*
new scope A:
   param x content set money 

scope A:
   def x := [$0; $4 +$ $5; $8 *$ 0.65]

new scope B:
   param a scope A 
   param max content money
   param min content money
   param y content money
   param z content int

scope B:
   def max := maximum money init $0 for m in a.x of m *$ 2.0
   def min := minimum money init $20 for m in a.x of m +$ $5
   def y := sum money for m in a.x of (m +$ $1)
   def z := number for m in a.x of (m >=$ $8.95)
*/