SnOlsen's Framework is an ACRE-focused fork of the efficient and modular mission making framework designed to help create large scale, high quality Arma 3 scenarios. Although originally designed for United Operations scenarios, it can be used in different types of communities and servers due to it's modular nature and high flexibility.
For information on how to make a mission read this guide.
For help in writing your own module, visit functions documentation and modules page.