---
title: Developer/Implementation Notes
permalink: /Developer/Implementation_Notes/
---
  
- [Developer/Implementation Notes/Sumo
  Modules](../Developer/Implementation_Notes/Sumo_Modules.md) - an overview of the sub-modules
- [Developer/Implementation Notes/Error
  Handling](../Developer/Implementation_Notes/Error_Handling.md) - philosophy and implementation
- [Developer/Implementation Notes/Options Sub
  System](../Developer/Implementation_Notes/Options_Sub_System.md) - how to use and extend command line options