//
// The input source
//

frame = ModifiableNumber(initialFrame);

object =
    LODGeo(
        ImportXFile("name.x", frame),
        [
            ( 64, ImportXFile("name_a", frame)),
            ( 32, ImportXFile("name_b", frame)),
            ( 16, ImportXFile("name_c", frame)),
            (  8, ImportMDL("tetra.mdl", frame))
        ]
    );