Curtains with heading tape allow you to hang the curtain directly on the curtain rod using the rod pocket or tabs. You can also hinge the curtain onto a track rail using gliders and hooks.
Using gliders and hooks usually creates a more formal and dressed-up feel, where hardware is not visible.
The fabric blocks out all light and glare on TV/screens. It gives complete privacy as shapes or light cannot be perceived from outside and the transition between day/night cannot be distinguished