You can attach text to most AutoShapes. Just click on the AutoShape and start typing. The text will now stay attached regardless of whether you move, resize or rotate the AutoShape. This does not work with line and connector AutoShapes.
The Scroll Lock light indicates when your next slide is ready in a slide show. By the way, you don't have to use the mouse to navigate your slide show. The arrow keys, Page Up, Page Down, N (for next) and P (for previous) work just as well.