The Code and Macro modules contain the functions that manipulate the internal representation of code.
Check the source of the Kernel module for a list of the majority of the operator macros, along with macros for things such as def, defmodule, alias, and so on. If we look at the source code, we’ll see the calling sequence for these. However, many of the bodies will be absent, as the macros are defined within the Elixir source.