Is there an option in maxmsp to view code ?

in some cases the code used in compiled objects is explained in the helpfile, in others not.

the basic idea of enviroments like maxmsp is that you should _not be forced to know what is going on inside an object.

instead of that, the "factory" externals as well as many other externals or patches follow a few guidelines and are otherwise more or less self explanatory.

lets look at [mtof], for example. if you look at the objects helpfile, you will find what math is used inside. on the other hand, normally you do not need to know what formula is used inside, all you need to know is that you can use it to convert note numbers to hertz.

the in and out part is something the majority of objects share. data triggered from the same input for example is usually causing output at many outlets in the manner of right-to-left. right-to-left is also how inputting works.

only sheduling and threading is a bit more difficult, you had to know by heart (or guess) which 15 of the factory externals require the high priority thread ("overdrive") beeing turned on in order to work.
it is easy to understand why [delay] or [metro] benefit from high prioroty, it is a bit more difficult to take that into account for the [line] object.