|  | .. _development_model: | 
|  |  | 
|  | Development Model | 
|  | ################# | 
|  |  | 
|  |  | 
|  | .. toctree:: | 
|  | :maxdepth: 1 | 
|  |  | 
|  | release_process | 
|  | proposals | 
|  | code_flow | 
|  | dev_env_and_tools | 
|  | issues | 
|  | api_lifecycle | 
|  | communication | 
|  | documentation | 
|  |  | 
|  | Terminology | 
|  | *********** | 
|  |  | 
|  | - mainline: The main tree where the core functionality and core features are | 
|  | being developed. | 
|  | - subsystem/feature branch: is a branch within the same repository. In our case, | 
|  | we will use the term branch also when referencing branches not in the same | 
|  | repository, which are a copy of a repository sharing the same history. | 
|  | - upstream: A parent branch the source code is based on. This is the branch you | 
|  | pull from and push to, basically your upstream. | 
|  | - LTS: Long Term Support |