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is possible to zoom and scroll the window accordingly, in which the block diagram
is displayed.
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5.3 Direction of Travel vs. Engine Orientation
It is important to understand the difference between direction of travel and the
orientation of an engine.
Direction of Travel
Direction of travel is seen from the passenger's point of view. For the passenger sitting
in a train it is important to know, whether the train runs from the east to the west, from
the city to the country, or from the sea to the mountains. The direction of travel has a
“geographical” meaning. Each block can be passed in one of two directions at a time.
For each train controlled by the Dispatcher the Dispatcher must know the train's intended
direction of travel. This information is derived by the Dispatcher from the arrangement
of the blocks in the related diagrams and the links that contain these blocks.
TrainController draws each block to represent one pair of corresponding directions.
Each block can be either passed horizontally (from the left to the right or back) or vertically
(from the top to the bottom or back).
Diagram 82: Block Diagram of a Circular Layout