Accessibility - start and end of examples not signaled

Most of the examples of memory structures being with struct but not all. Moreover, most examples end with }; but not all, for example, under 2.7.21.3.

My usual accessibility checker is offline but if you were reading the text aloud, if the start and end of examples is not uniformly signaled to someone hearing the text, the examples would be much harder to contrast with the surrounding normative text.

An accessibility issue  in general but also a personal one because after nearly 30 years as a diabetic my vision remains normal, but they can't promise how much longer that will be the case. Adding uniform start and end markers won't inconvenience sighted readers and will enhance access to your work for those using assistive technologies.