DocsKit

function lorem(ipsum) {
This is a callout
  return ipsum
}

Using markdown inside a callout:

function lorem(ipsum) {
Hello world, this is a callout.
  return ipsum
}

With code inside a callout:

function lorem(ipsum) {
  return dolor(ipsum)
function dolor(x) {
  return x * x
}
}

Code with title inside a callout:

index.js

function lorem(ipsum) {
  return dolor(ipsum)
math.js
function dolor(x) {
  return x * x
}
}

Playground