[□] □ □
[□ | □] □ □
[!□] □ □
If a roll or a collision does occur , you want the most protection possible . If a candidate with an adulterous past pulls ahead , the stragglers may be sorely tempted to play the infidelity card - - if not openly , then through their surrogates . If a student chooses to write a thesis , the written part of the comprehensive examination is waived . If a retrieved document , for example , cited another document present within the database , having the citation tag within the retrieved document contain identifying information for the second document could enable hypertext linking of documents for citation-chain searching .