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The title bar of a Web Part Page contains a title, caption, description, and image. An administrator or a user with sufficient rights to modify a Web Part Page for all users can add, modify, or remove these items. The title, caption, description, and image are optional and can be changed for all users who share the Web Part Page. However, they cannot be personalized for an individual user.
An administrator can also enable anonymous access to a server running Windows SharePoint Services from Microsoft. By doing so, an authentication button is automatically displayed on the Web Part Page to let users sign in. A user signs in to a Web Part Page to see or specify personal settings for the page.
The following components make up the Web Part Page title bar:
Title The main text heading in the title bar of a Web Part Page. Initially, it is set to a value based on the file name of the page. Because the title is optional, you can change or delete it. There is no limit to the length of the title. However, because a long title takes up considerable space on a Web Part Page, you may want to balance the title bar with the rest of the Web Parts on the page.
Caption A supplemental description for a Web Part Page. The caption is optional. If it exists, it is displayed above the title in the title bar of the Web Part Page. The maximum length of a caption is 100 characters.
Description Supplemental information for the title or caption of a Web Part Page. The description is optional, and if it exists, it is displayed when users rest their mouse pointer on the title or caption of a Web Part Page. The maximum length of a description is 255 characters.
Image An image such as a company logo, which appears to the left of the Web Part Page title. The image is optional. By default, it is set to a logo that you can remove or replace. An image is displayed at the size in which it is provided. The location of the image file can be specified as either a Web address or a file path. The supported file extensions for image files are .bmp, .gif, .jpg, .jpeg, and .pict.
Authentication Button A server running Windows SharePoint Services has anonymous access disabled by default, and automatically prompts users to sign in before they access the server. Alternatively, an administrator can enable anonymous access and allow users to sign in only when they want to see or specify personal settings for a Web Part Page on the server.
Whenever anonymous access is enabled for a server running SharePoint Portal Server, an authentication button appears on the Web Part Page title bar on that server. The button appears as a sign-in button when no user has signed in. When a user clicks the button, a login prompt allows users to type authentication information such as a user name and a password. If a user is successfully authenticated, the Web Part Page will show all personal settings that the user has set for that page.