Is it possible to append to a local XML file?

I am new to Android and relatively new to Java so please bear with me. I have an XML file stored in the res/xml path that I am trying to write to. I know how to read it using XmlResourceParser, but I have not been able to find a way to write/append to that file locally. Could someone point me in the right direction please. All the information I have found online points to writing to external XML files. I have not been able to find info on how to write to a file in the local directory structure (if it is even possible) - specifically in the /res/xml directory.

Thank you in advance.