#### Use of the term "safe" or "safety"

As we are programming in Rust, the terms safe and unsafe are narrowly defined to

refer to the safety of the language, i.e. "safe Rust" and "unsafe Rust", as

mentioned in [The Rustnomicon].

With this in mind, we only accept the use of "safe" about code if it is related

to implementing something within the realm of unsafe Rust. The comment must

describe why the use of unsafe Rust is in fact safe, and under what conditions.

We will not accept the use of "safe" if it relates to the use of `panic!`,

`unreachable!`, `unwrap`, or `expect`. We will, however, still recommend that

those uses are documented – generally using a `# Panic` header in a document

string.

[The Rustnomicon]: https://doc.rust-lang.org/nomicon/meet-safe-and-unsafe.html