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\begin{verbatim}
#include<iostream.h>

class A {
public:
        int operator==(const A& a) const {return 1;}
        int operator<(const A& a) const {return 1;}
        friend ostream& operator<<(ostream& os, const A& a) {return os;}
};

#define DEFINE_TEMPLATE                 // there is some redundancy here.
#include<LINK/basic/ElementOps.h>       // don't know what g++ does with
#include<LINK/basic/List.h>             // included but not instantiated
#include<LINK/basic/MSet.h>             // code.
#undef DEFINE_TEMPLATE

template class ElementOps<A>;
template class List<A>;
template class ListNode<A>;
template class Iterator<A>;
template class SimpleContainer<A>;
template class Container<A>;
template class Collection<A>;
template class MSet<A>;
template ostream operator<<(ostream& os, const Collection<A>&);
template ostream operator<<(ostream& os, const Container<A>&);

main()
{
        A a;
        MSet<A> m;
        m.insert(a);

        cout << m << endl; 
}
\end{verbatim}

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\begin{verbatim} 
{}
\end{verbatim}

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