Timetable & Train Order Help

Will sent the following, suggesting it would help when taking the SW Online Timetable & Train Order test. It was submitted to his article in MR, but didn't make the final cut.

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Here are the Rules excerpted from the "Consolidated Code of Operating Rules" in this article. In addition to rules directly quoted in the article, relevant rules that were referred to but not quoted are also shown:

Superiority of Trains

71. A trains is superior to another train by right, class or direction. Right is conferred by train orders; class and direction by timetable. Right is superior to class or direction. Direction is superior as between trains of the same class.
72. Trains of the first class are superior to those of the second; trains of the second class are superior to those of the third; and so on.
S-72. Trains in the direction specified by the time-table are superior to trains of the same class in the opposite direction.
73. Extra trains are inferior to regular trains.
82. Time-table schedules, unless fulfilled, are in effect for twelve hours after their time at each station. Regular trains more than twelve hours behind either schedule arriving or leaving time at any station lose both right and schedule, and can thereafter proceed only as authorized by train order.
83. A train may not leave its initial station on any division, subdivision, or a junction, or pass from one of two or more tracks to single track, until it has been ascertained whether all trains due, which are superior, have arrived or left.
87. An inferior train must keep out of the way of opposing superior trains and failing to clear the main track by the time required by the rule must be protected as prescribed by Rule 99.
92. A train must not leave a station in advance of its schedule leaving time.
99. ....When a train stops under circumstances in which it may be overtaken by another train, the flagman must go back immediately with flagman's signals a sufficient distance to insure full protection.... The front of the train must be protected in the same way when necessary by the head-end brakeman.....
203. Train Orders must be numbered consecutively each day, beginning at midnight.
220. Train orders once in effect continue so until fulfilled, superseded, or annulled. Any part of an order specifying a particular movement may be either superseded or annulled. Orders held by or issued for or any part of an order relating to a regular train become void when such train loses both right and schedule as prescribed by Rule 82, or its schedule is annulled.