At the top right of your WordPress Dashboard you’ll see a tab called Screen Options. Clicking on the tab brings up a list of options that can enhance your Dashboard use.
Checked boxes are options that are active. Try checking some options that are not currently active. For example, checking the Author box shows a pull-down menu of all the authors for your site. If you share a WordPress site, you can be a ghost writer by selecting another author or administrator’s name. This is particularly helpful in a school setting where the building principal might have a secretary or teacher post content that needs to be attributed to the principal.
Most of the options are not mission critical so you can uncheck those boxes to clean up your Dashboard. Important Options are Categories, Excerpt, Theme Options and, for those of you using Subscribe2, the Subscribe2 Notification Overide.