RemixIconEx.System.checkbox_multiple_blank

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

checkbox_multiple_blank(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.System.checkbox_multiple_blank()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M7 7V3a1 1 0 0 1 1-1h13a1 1 0 0 1 1 1v13a1 1 0 0 1-1 1h-4v3.993c0 .556-.449 1.007-1.007 1.007H3.007A1.006 1.006 0 0 1 2 20.993l.003-12.986C2.003 7.451 2.452 7 3.01 7H7zm2 0h6.993C16.549 7 17 7.449 17 8.007V15h3V4H9v3zM4.003 9L4 20h11V9H4.003z" />
</svg>

example usage

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