Flow of Methods in sales order posting starting from confirmation,picking list,packing slip,invoice

I would like to know the flow of methods(step by step calls to methods) in sales order posting.Is there any document that gives a precise picture to understand the scenario?i would like to know the sequence of calls…

Thank You

when u posting sales order, sales form letter_posting class will call

you in depth you wan sequ of method in that class just use debugger . you will come to know

look into salesFormLetter* classes, if it is AX 2012, the formLetter framework has been refactored, for more info look into the whitepaper , http://technet.microsoft.com/en-us/library/hh272871.aspx