You can use a simple one-celled table with a border to draw a rectangle around any section of text on a web page. By nesting that single-cell table in another two-column table, you can put a sidebar of text to the left or right side of your web page. Outlined sections of text and sidebars are very common on printed paper pages, so you'll probably find uses for them on your web pages too. Try adding one to a page of your own.
Do you have any pages where different visitors might be interested in different information? Use a table to present two or three columns of text, each with its own heading (and perhaps its own graphic). That way, something of interest to everyone will be visible at the top of the page when it first appears.
