Page Layouts
The page layout specifies the appearance of a tab page in a Force.com application. A default page layout is created for a tab when the tab is associated with a data object. The default page layout includes all the visible fields of the object, as well as lists of related records and other associated data, such as system data and custom links.
You can access and modify a page layout from the main page for an object in the Force.com Builder. An object can have more than one page layout, and page layouts can associated with different user profiles.
Official Documentation
- Tips and Hints for Page Layouts and Field-Level Security PDF
- Online help The Salesforce.com online help includes complete documentation on page layouts.