o_polymorphic.cpp"><code style="white-space: normal">demo_polymorphic.cpp</code></a>, 
<a target=demo_polymorphic_A_hpp href="../example/demo_polymorphic_A.hpp"><code style="white-space: normal">demo_polymorphic_A.hpp</code></a>, and 
<a target=demo_polymorphic_A_cpp href="../example/demo_polymorphic_A.cpp"><code style="white-space: normal">demo_polymorphic_A</code></a>
show how polymorphic archives are to be used. Note the following:
<ul>
  <li><a target=demo_polymorphic_A_hpp href="../example/demo_polymor