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-<p>
-  Sometimes in our projects we want to use code written in other languages, most
-  commonly Erlang and JavaScript, depending on which runtime is being used.
-  Gleam's <em>external functions</em> and <em>external types</em> allow us to
-  import and use this non-Gleam code.
-</p>
-<p>
-  An external type is one that has no constructors. Gleam doesn't know what
-  shape it has or how to create one, it only knows that it exists.
-</p>
-<p>
-  An external function is one that has the <code>@external</code> attribute on
-  it, directing the compiler to use the specified module function as the
-  implementation, instead of Gleam code.
-</p>
-<p>
-  The compiler can't tell the types of functions written in other languages, so
-  when the external attribute is given type annotations must be provided. Gleam
-  trusts that the type given is correct so an inaccurate type annotation can
-  result in unexpected behaviour and crashes at runtime. Be careful!
-</p>
-<p>
-  External functions are useful but should be used sparingly. Prefer to write
-  Gleam code where possible.
-</p>