if the tag is Not a simpleTag, it should have four possible values: empty,scriptless, tagdependent, JSP, which one is the default value if <body-content> is not present?
quote: "body-content (optional) Provides information on the content of the body of this tag. Can be either empty, tagdependent, or scriptless. A translation error will result if JSP or any other value is used. Defaults to scriptless."