# Conventions and Coding Standards

• Comments in the code should be in Natspec Format.

• Comments in code relevant to business logic should be in the facets.

• Comments in the libs should be relevant to aspects of low-level technical implementation and data structures.

• 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.