What is the process responsible for writing and reading from memory? Basically I'm looking for the core process responsible for this, I'll try and be more clear: When an operator such as "=" is used what is the process and where may I find this process to take a look at the inner workings there of? When I use a variable in another function and output this variable to a file/stdout/etc., what is responsible for retrieving this variable and where may I find it to review the inner workings thereof?