RemixIconEx.Editor.line_height

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

line_height(icon_css_class \\ "icon")

iex> Elixir.RemixIconEx.Editor.line_height()
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" class="icon">
  <path d="M11 4h10v2H11V4zM6 7v4H4V7H1l4-4 4 4H6zm0 10h3l-4 4-4-4h3v-4h2v4zm5 1h10v2H11v-2zm-2-7h12v2H9v-2z" />
</svg>

example usage

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