This document provides instructions for creating a function module in SAP ABAP using transaction code SE37. It describes how to first create a function group using the menu bar in SE37, then create a function module for that group on the main screen. Parameters such as import, export, changing, and tables can be added and code can be written under the source code tab to complete the function module. Screenshots illustrate the process of creating a function group and module as well as adding parameters.