Derek is creating an image map named "cityscape." In his XHTML code, what must he use as the usemap attribute value?
You and others have read an informal message written by your company's president. The message is not addressed to any particular group in the company, and it was not delivered to any specific person or group. However, the message is on a persistent medium, and cannot be changed by anyone but the company president. Which of the following have you most likely read?