What's new in PowerPoint 2013-16 - Guides/2

In PowerPoint 2013 you now can add separate guides to the master, the slide layouts and the slides.

Guides added to the master are colored red. They will of course appear on every slide layout and on the slides.
On the slide those guides can't be moved.

Guides added to a slide layout are colored orange.

On the slide these guides can't me moved.

Guides added to a slide are grey. Those guides can be moved.