Struct Description 

pub struct Description<'a> {
    pub text: Option<&'a Text>,
    pub keys: KeyDescriptions<'a>,
}

The description for KeyEvents that are mapped or bound in a Mode

This description will include an explaining Text as well as an Iterator, which returns one of the following:

• A sequence of KeyEvents that are mapped to the action
• A list of Bindings that are bound to the action

The first one happens when you call map or alias, since they let you map a sequence of KeyEvents.

The second one comes from a Modes own Bindings from Mode::bindings. This is a list of patterns for KeyEvents that are bound to actions. This list is immutable, and each item is an alternation of patterns (e.g. 'a'..='z', “any media key”, concrete KeyEvents, etc).

One other thing to note is that

Fields

text: Option<&'a Text>

The Text describing what the KeyEvent will do

keys: KeyDescriptions<'a>

The Mode’s native bindings and all maps and aliases to those bindings