RemixIconEx.System.arrow_left_up

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

arrow_left_up(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.arrow_left_up()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M9.414 8l8.607 8.607-1.414 1.414L8 9.414V17H6V6h11v2z" />
</svg>

example usage

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