§ 60.15  Rules of evidence; what witnesses may be called. 1. Unless  otherwise expressly provided, in any criminal proceeding  involving a defendant in which evidence is or may be received, both  the  people  and  the  defendant  may  as  a matter of right call and examine  witnesses, and each party may cross-examine every witness called by  the  other party. 2. A defendant may testify in his own behalf, but his failure to do  so is not a factor from which any inference unfavorable to  him  may  be  drawn.