Use

Use is frame. Meaning is not use. Use is the way in which meaning is used.

So form does not precondition content, but is given in the relation of content to other content.

Expressed through content, it exists in a categorical relation to content.

Use is not the precondition of meaning, but arises out of the condition of meaning  through its content. The necessity of its content is called form. It's necessity is contingent on the kind of content that is evoked.