This content does not apply to Commerce versions 14+.
Commerce Manager has a very specific folder structure. Understanding this structure helps you modify existing subsystems and create and integrate new ones.
## Basic structure
The basic structure is as follows:
**Apps** – Root folder that contains all Commerce Manager Systems administration screens, such as _Catalog System_, _Order System_, and so on.
**\[SystemName\]** – Folder name of the system, such as _Catalog_ for the _Catalog System_; files related to that system are stored there.
**\[SystemName\].config** – Application configuration file that defines all views for the system.
**Config** – Configuration folder.
**View** – Folder with views; may contain any number of subfolders.
**\[ViewName\].xml** – Specific view description for any view.
**Permissions.config** – Defines permissions for module.