In a DTD, what does "" most precisely mean?( )
Element 'a' may contain anything in the schema.
Element 'a' may have any attributes.
Element 'a' may contain anything.
Element 'a' may contain anything, or nothing.
青云测评
青云测评
In a DTD, what does "" most precisely mean?( )
Element 'a' may contain anything in the schema.
Element 'a' may have any attributes.
Element 'a' may contain anything.
Element 'a' may contain anything, or nothing.
