..In years gone by the train order was given on the fly it would be transmitted to a telegrapher and then typed on a special piece of carbon like paper called a flimsie with a typewriter that had capitol letters only, the trainorders would then be tied onto a contraption sometimes called a hoop, that looked like a small bow without the arrow, one set would be placed in the taller position for the engineer to grab as he went by, and another in a lower position for the caboose to grab, if by chance either missed there hoop, then the train would need to stop and somebody would walk up or back and get there orders be it the head end or the crew from the crummy aka caboose.
If the engineer was a jokester, then once he got his orders off the trainorder pole, he might
kick up the throttle a notch or two,
making it difficult for the conductor to grab his set..fun and games on the railroad...even way back then.
For a better description of the trainorder, try this link to Wikipedia...