{{ size={_Mylast - _Myfirst} }} _Mylast - _Myfirst _Myend - _Myfirst _Mylast - _Myfirst _Myfirst {_Bx._Buf,na} {_Bx._Ptr,na} _Bx._Buf,na _Bx._Ptr,na _Mysize _Myres {_Bx._Buf,su} {_Bx._Ptr,su} _Bx._Buf,su _Bx._Ptr,su _Mysize _Myres {{ size={_Mysize} }} _Mysize _Mysize _Myhead->_Next _Next _Myval {{ size={_Mysize} }} _Mysize _Mysize _Myhead->_Parent _Left _Right _Myval {{ size={_Mysize} }} _Mysize _Mysize _Myhead->_Parent _Left _Right _Myval ({first}, {second}) first second