The Global Configuration for Articles is an expansive section that controls not only the display of Articles, but for Categories created in the Content section. It covers such things as showing titles, layout, editing options, lists, the order to be shown and many other options. To get to these Global settings follow these steps:

System -> Global Configuration -> Articles (on the left side of the screen)

Click here for the joom3 section that goes into depth regarding the Global Configuration for Articles.