The documents below describe how to modify and extend GMAT.   The documentation is broken down into generic documentation, and documentation relating to specific components.  If you need to add a new feature, start with the general documentation on how to add a command, resource, and panel.  If you wish to implement your new feature as a plugin, you will need to read the plugin documentation as well.

• General Documentation for Generic Extensions
• • How to Compile GMAT
  • How to Add a New Resource
• • How to Add a New Command
  • How to Create GMAT Panels
  • How to write a Plugin
  • How the Publisher Works
• Feature Specific Extensions
  
  • How to Add a new Attitude Parameter
  • How to Add a new Orbit Parameter
  • How to Add an Attitude Model
  • How to Add an Orbit State Type
  • How to Add Math Node and Built-in GMAT Functions
• Other Modifications
  • Deprecating and Removing a Field or Parameter