A short, prose description of the pattern.
// An example of the pattern in action, should be mostly code, commented
// liberally.Why and where you should use the pattern
Good things about this pattern.
Bad things about this pattern. Possible contraindications.
A deeper discussion about this pattern. You might want to cover how this is done in other languages, alternative approaches, why this is particularly nice in Rust, etc.
Related patterns (link to the pattern file). Versions of this pattern in other languages.