RemixIconEx.System.arrow_right_down

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

arrow_right_down(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.arrow_right_down()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M14.59 16.004L5.982 7.397l1.414-1.414 8.607 8.606V7.004h2v11h-11v-2z" />
</svg>

example usage

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