﻿plan {
    param A := 3;
    const B := A * A;
    var X from A to B def 2 * A;
};

plan {
    param A := 3;
    var X from A to A * A def 2 * A opt;
};

plan { var X to 7 opt; };

plan { var X def 7 opt; };

plan { var X from "hello"; };
