Most clients allow you to customise the way they display the marked up page that you have retrieved. This is a bone of contention between some people about WWW - the fact that individuals may see the author's data in very different ways seems curious in the extreme to people from the publishing world, where standards of layout are very fixed (and high).
At the very least, a system will let you change the way it displays anchors, and possibly the type of font used. Most graphical clients let you delay or prevent image loading, so that they are usable over slow links, though not everyone who provides information on the Web appreciates how this affects the look of a page. Of course text based clients such as Lynx can't display inline images in the first place.