Rule 526.—Regular trains will be designated in orders by their schedule numbers, as "No. 10" or "2nd No. 10," adding engine numbers if desired; extra trains by engine numbers, as "Extra 798"; and all other numbers by figures. The direction of the movement of extras will be added when necessary, as "East" or "West." Time will be stated in figures only.
[Note.—In case any roads desire to state time in words as well as figures, the Committee sees no objection to their doing so.]
Rule 527.—The following signs and abbreviations may be used:
Initials for Superintendent's signature.
Such office and other signals as are arranged by the Superintendent.
C & E—for Conductor and Engineman.
O K—as provided in these rules.
Min—for Minutes.
Junc—for Junction.