The description contained between the <OBJECT> and </OBJECT> tags of the OBJECT elements on the page should be an equivalent description of the objects themselves.

Insert a meaningful description inside <OBJECT> tag.

The ALT description should convey the same information as the object embedded, and it should explain the role the object plays on the page: why it is there, what it represents, how it presents the information.

The OBJECT element's design offers a mechanism for specifying alternate object renderings. Each embedded OBJECT declaration may specify alternate content types. If a browser cannot render the outermost OBJECT, it tries to render the contents, which may be another OBJECT element, etc.