cell a {
    box A;
    col {B, C;}
    A@e->B,C [routing.arrow_distance = 0];
}

cell b {
    box A;
    col {B, C;}
    A@e->B,C;
}

cell c {
    box A;
    col {B, C;}
    A@e->B,C [routing.arrow_distance = 15];
}
