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7.16.2 Flip Lines This is an easy way of changing the direction of the line. Note that the arrows on the end of each line indicate the direction that it must be crossed in order to be recognised as a valid crossing. Note that not every line crossing is treated as a count increment dependant on the count mode and the track of the target. See section 7.19.2 for more details of count modes. Figure 7.16.4 Line 2 Flipped Line 1 Flipped Line 1 & 2 Flipped Figure 7.16.5 58