rem: static void print( std::ostream& out, pointer p ) { out << '[' << p << "] compressed_page:\n"; p->print( out ); }
add: void print( std::ostream& out ) { out << format( "\tsized %s\n" ) % ( 1 << capacity() ); }
context: 	static void print( std::ostream& out, pointer p ) { out << '[' << p << "] compressed_page:\n"; p->print( out ); }