//示例：
public class TestEditor:Editor
{

    [MenuItem("MyTools/FuncA %a")]
    public static void FuncA()
    {

    }

    [MenuItem("MyTools/FuncB #b")]
    public static void FuncB()
    {

    }

    [MenuItem("MyTools/FuncC &c")]
    public static void FuncC()
    {

    }

    [MenuItem("MyTools/FuncD _F3")]
    public static void FuncD()
    {

    }
}