If a user opens a Web folder inside a frame and then clicks something in the Web folder, the file or folder that the user clicks takes over the entire window. For example, suppose that a page contains two frames, one frame pointing to http://www.microsoft.com and the second frame pointing to a network drive. If the user clicks a file or folder in the second frame, that frame takes control of the entire window, including the first frame. For file types that the browser cannot host, such as .txt files, a separate window in the appropriate host application is opened.

A Web folder is a part of the file system hierarchy, but it does not necessarily represent anything in the file system. An example is Network Neighborhood.

Internet Explorer 5.5 supports transparent content for a FRAME. The following conditions must be met to define transparent content for a FRAME.

The ALLOWTRANSPARENCY attribute, used with the FRAME element, must be set to true.
In the FRAME content source document, the background-color or BGCOLOR attribute of the BODY element must be set to transparent.

This element is available in HTML and script as of Internet Explorer 3.0.

This element is a block element.

This element does not require a closing tag.