# Beneath std | |
This section documents (or will document) features that are provided by the standard library and | |
that `#![no_std]` developers have to deal with (i.e. provide) to build `#![no_std]` binary crates. A | |
(likely incomplete) list of such features is shown below: | |
- `#[lang = "eh_personality"]` | |
- `#[lang = "start"]` | |
- `#[lang = "termination"]` | |
- `#[panic_implementation]` |