const TOML_FEATURES_HEAD: &str = r##"
[features]
#! ### Features
default = []
#! Every supported language has a feature with the same name as the respective public function.
#! Additionally the three feature groups
#! <span class="stab portability"><code>some</code></span>,
#! <span class="stab portability"><code>most</code></span>, and
#! <span class="stab portability"><code>all</code></span>
#! are available.
## Include parsers for the most widely known supported languages.
"##;