When a cell in a UITableView leads to a subview, it can be useful to have some added visual context. A disclosure indicator in a UITableViewCell is a small chevron displayed at the right edge to visually indicate that it leads somewhere.
For example, take a look at the “History” folder in the Mobile Safari Bookmarks:
iOS Safari Bookmarks
Nifty, right? Here’s how to do it:
Keep in mind that a disclosure indicator is merely for visual context; it doesn’t actually do anything. You still have to implement the subview you want to display.