doc comment in Rust

When running rustdoc, these are the comments that get compiled into documentation. They are denoted by a ///, and support Markdown.
```
/// A human being is represented here
pub struct Person {
    /// A person must have a name, no matter how much Juliet may hate it
    name: String,
}
```
Below are a few examples of the most common #[doc] attributes used with rustdoc.
* inline: Used to inline docs, instead of linking out to separate page.
* no_inline: Used to prevent linking out to separate page or anywhere.
* hidden: Using this tells rustdoc not to include this in documentation: