Some Observations about Segmentation
	ä The programmer is aware of this technique: address space becomes two-dimensional (segment + offset) instead of the linear, one- dimensional address space that paging provides. ä Every segment has a linear address space. ä Segmentation can be used to implement virtual memory. ä Procedures and data can be distinguished and separately protected. ä Segmentation can easily accommodate program structures whose size fluctuates. ä It is easy to share procedures between users