record array(a,b,c,d,e,f,g)

procedure dummy(u,v,x,y,z)
   suspend u | v
   return x
end

procedure main()
   write("a := [1,2,3,4] ----> ",image(a := [1,2,3,4]) | "none")
   write("a1 := a[1:2] ----> ",image(a1 := a[1:2]) | "none")
   write("every write(!a1) ----> ",image(every write(!a1)) | "none")
   write("a2 := a[3:0] ----> ",image(a2 := a[3:0]) | "none")
   write("every write(!a2) ----> ",image(every write(!a2)) | "none")
   write("a4 := a[2:2] ----> ",image(a4 := a[2:2]) | "none")
   write("every write(!a4) ----> ",image(every write(!a4)) | "none")
   write("a5 := a[0-:2] ----> ",image(a5 := a[0-:2]) | "none")
   write("every write(!a5) ----> ",image(every write(!a5)) | "none")
   write("a3 := a[0:3] ----> ",image(a3 := a[0:3]) | "none")
   write("every write(!a3) ----> ",image(every write(!a3)) | "none")
   write("a[3] :=: a3[&null] ----> ",image(a[3] :=: a3[&null]) | "none")
end