Everything should be in the manual - but it is not nowadays. Many projects just say read the code which is difficult to first find the correct code and then und

Everything should be in the manual - but it is not nowadays. Many projects just say read the code which is difficult to first find the correct code and then understand it as the code might be more complex than the uisers knowledge or be in a different language. Even if it is it is often difficult to put the individual facts together and that is what a SO answer will do.