The judge shall initiate the voir dire examination of jurors by identifying the parties and their respective counsel. He may outline the nature of the case, the issues of fact and law to be tried, and may then put to the jurors any questions regarding their qualifications to serve as jurors in the cause on trial. The parties or their attorneys shall be allowed a reasonable opportunity to supplement such examination. Counsel shall scrupulously guard against injecting any argument in their voir dire examination and shall refrain from asking a juror how he would decide hypothetical questions involving law or facts. Counsel shall avoid repetition, shall not call jurors by their first names or indulge in other familiarities with individual jurors, and shall be fair to the court and opposing counsel.