Since you handle all sound programming through the same interface — the sidtab — there are a number of things which require more manual work in defMON than in other editors. (On the other hand, you have more freedom at your hands than in many other editors.) For example, things like “hard restart” (various tricks to avoid the ADSR bug in the SID) is handled through sidtab chunks rather than through code, which means that you can do it the way you prefer yourself, although you have to do it manually. Another example is an effect like vibrato. In defMON you would create a vibrato the way you like it, rather than calling a pre-programmed vibrato, which again means that there is more flexibility, but also more manual work.