RemixIconEx.System.share_forward_box

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

share_forward_box(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.share_forward_box()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M9 3v2H4v14h16v-9h2v10a1 1 0 0 1-1 1H3a1 1 0 0 1-1-1V4a1 1 0 0 1 1-1h6zm9.95 2L16 2.05 17.414.636l5.34 5.34A.6.6 0 0 1 22.33 7H14a2 2 0 0 0-2 2v6h-2V9a4 4 0 0 1 4-4h4.95z" />
</svg>

example usage

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