Cargo Features

[dependencies]
sonar = { version = "0.1.0", default-features = false, features = ["window"] }
default = window

The window feature is set by default whenever sonar is added without default-features = false somewhere in the dependency tree.

window default = sonar-window

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

sonar-window window