Test of FILL=### followed immediately by transformation
1 1 -10   1 -2  imp:n=1 fill=2(5 5 5)
2 0      -1: 2  imp:n=0
3 2 -10   3 -4  u=2   imp:n=1
4 3 -10  -3: 4  u=2   imp:n=1

1 px 0
2 px 10
3 py 0
4 py 10

m1 1001 1
m2 1001 1
m3 1001 1

