\begingroup\parskip 0pt\baselineskip 0pt\tt {\tt\obeyspaces\gdef {\hskip.5em}} \def\par{\leavevmode\endgraf} \catcode`\`=\active\obeylines \ttverbatimtypedef ... dic_impl_item;class dic_impl { virtual int  cmp(GenPtr, GenPtr) const = 0; virtual int  int_type()          const = 0; virtual void clear_key(GenPtr&)  const = 0; virtual void clear_inf(GenPtr&)  const = 0; virtual void copy_key(GenPtr&)   const = 0; virtual void copy_inf(GenPtr&)   const = 0;public: dic_impl(); dic_impl(const dic_impl&);~dic_impl(); dic_impl& operator=(const dic_impl&); GenPtr key(dic_impl_item p)  const; GenPtr inf(dic_impl_item p)  const; dic_impl_item insert(GenPtr,GenPtr); dic_impl_item lookup(GenPtr)  const; dic_impl_item first_item()    const; dic_impl_item next_item(dic_impl_item) const; dic_impl_item item(void* p) const { return dic_impl_item(p); } void    change_inf(dic_impl_item,GenPtr); void    del_item(dic_impl_item); void    del(GenPtr); void    clear(); int     size() const;};\endgroup