RemixIconEx.Design.mark_pen

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

mark_pen(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Design.mark_pen()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M15.243 4.515l-6.738 6.737-.707 2.121-1.04 1.041 2.828 2.829 1.04-1.041 2.122-.707 6.737-6.738-4.242-4.242zm6.364 3.535a1 1 0 0 1 0 1.414l-7.779 7.779-2.12.707-1.415 1.414a1 1 0 0 1-1.414 0l-4.243-4.243a1 1 0 0 1 0-1.414l1.414-1.414.707-2.121 7.779-7.779a1 1 0 0 1 1.414 0l5.657 5.657zm-6.364-.707l1.414 1.414-4.95 4.95-1.414-1.414 4.95-4.95zM4.283 16.89l2.828 2.829-1.414 1.414-4.243-1.414 2.828-2.829z" />
</svg>

example usage

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