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Irr-label

An irrelevant label.

This can be used as a dummy value of the type.

Function: irr-label

(defun irr-label nil
  (declare (xargs :guard t))
  (label-default))

Theorem: labelp-of-irr-label

(defthm labelp-of-irr-label
  (b* ((acl2::irr (irr-label)))
    (labelp acl2::irr))
  :rule-classes :rewrite)