+ void print_overall_coeff(const print_context & c, const char *mul_sym) const;
+ void do_print(const print_context & c, unsigned level) const;
+ void do_print_latex(const print_latex & c, unsigned level) const;
+ void do_print_csrc(const print_csrc & c, unsigned level) const;
+ void do_print_python_repr(const print_python_repr & c, unsigned level) const;
+ std::auto_ptr<epvector> expandchildren(unsigned options) const;