Inserts a link for a print stylesheet into your theme header. Provides a very simple print.css file that you probably want to improve upon, but which should do most of the job if you're using a Sandbox-based theme.
Add File Version (AFV) can automatically or manually add file version to the CSS/JS files that were added using wp_enqueue_style and wp_enqueue_script, admin_enqueue_style and admin_enqueue_script.