RemixIconEx.Document.markdown

You're seeing just the function markdown, go back to RemixIconEx.Document module for more information.
Link to this function

markdown(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Document.markdown()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M3 3h18a1 1 0 0 1 1 1v16a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1zm1 2v14h16V5H4zm3 10.5H5v-7h2l2 2 2-2h2v7h-2v-4l-2 2-2-2v4zm11-3h2l-3 3-3-3h2v-4h2v4z" />
</svg>

example usage

svg.icon {
  width: 96;
  height: 96;
}