Reading

This is where you set how your site is displayed to users.

Reading

 

You can set what will be displayed on the Front Page, the  number of post can be shown at a time, the number of items (blog post) will be displayed, and what will be shown for each article in a feed.

Note: Some of these feature may be different depending on the theme being used.

For more information about WordPress Reading click here http://codex.wordpress.org/Settings_Reading_Screen.