Hood is the "system app", it controls various basic functions of Arvo and provides an interface for some of those functions with generators in the dojo. While Hood is technically a single app, it's really three different apps under the hood:

• %kiln: Manages desk and agent installation, updates, etc.
• %drum: Provides an interface to Dill, the terminal driver vane, for userspace apps.
• %helm: Provides a user interface for various low-level settings, kernel functions and reports.