This document lists architectural details of cview.

# Focus-related style attributes are unset by default

This applies to all widgets except Buttons, which require a style change to
indicate focus. See [ColorUnset](https://docs.rocketnine.space/gitlab.com/tslocum/cview#pkg-variables).

# Widgets always use `sync.RWMutex`

See [#30](https://gitlab.com/tslocum/cview/-/issues/30).
