digraph SeaOfTypes {

    Byte4 [label="[Byte; 4]", fontsize=24, shape=plaintext];
    Byte8 [label="[Byte; 8]", fontsize=24, shape=plaintext];

    IEEE754single [label="IEEE-754.single", fontsize=24, shape=plaintext];
    IEEE754double [label="IEEE-754.double", fontsize=24, shape=plaintext];

    Real [label="ℝ", fontsize=28, shape=plaintext];


    IEEE754single -> Byte4
    IEEE754double -> Byte8

    Real -> IEEE754single
    Real -> IEEE754double
}