Is there a site or a book or a blog which explains the meaning and function of every single file on an android, from the sounds that are played during start-up, to the files associated with darkening or lightening the screen brightness? I'm thinking there should (or already must be) a place where every single file on an android is explained. What do people know about this? Is this something you've thought about? Would like to see? Would someone be interested in looking in to this? An infographic linking all the system files and apps and media would be extremely helpful.