A macro is a series of commands and instructions that you group together as a single command to accomplish a task automatically.
<span>To verify the version of HTML being run on any given page, check the DOCTYPE declaration at the head of the file. Use "inspect element" to view the page source; the DOCTYPE is generally in the header.</span>
That would be a star network. A star network isn't necessarily shaped like a star, of course, but like you mention this topology has a central device, usually a server of some sorts, and then many different endpoints coming out of that central device, such as the client computers for the server.
