If you've ever done any Web page design or programming, you're undoubtedly familiar with the structure of a link in HTML. In technical terms, an HTML link uses the anchor element (whose starting and ending tags are <a> and </a>), and one of its main attributes, href, which has a URL as its value. Text or images placed inside the beginning and ending <a> tags make a link that, when clicked, goes to the URL in the href attribute, like this:
So clicking a link is one form of user interaction enabling you to communicate with the server. But it's pretty limited, because all you can do is make a request for the page that's already supplied by the site designer. For example, if I click a link to the About page, the only reason it goes to the right page is because the site designer has already hard-coded the link with the URL for that page.
Most people leave their media settings at the default settings, but you may find that you want your image categories â€“ thumbnail, medium, large â€“ to be different than the default settings.
Additionally you can tell WordPress where to store your media files when you upload them. By default they will upload to the wp-content/uploads folder.
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