# Code standards

Comments in the code should be in Natspec Format.

As the interfaces are automatically generated from the facets, comments should be put in the relevant facet and not the interface.

All low-level functionality involving state change should be implemented in libraries. AppStorage should only be accessed via library.

Events are used to share low-level technical data with off-chain applications. As such, events generally should be emitted in libraries where the state is changed.

Facets should be used to expose public functionality and control access (apply modifiers).

Functionality is logically separated into facets.