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Changes between Version 2 and Version 3 of GraphicTrafficEventsCreator_userguide

-                      v2
+                      v3
 System: Changes the above dot to White.  Changes dots further along 405 N to white.
 User: Clicks on VDS "405 N 9.46 @ BRISTOL 1"
+System: Append one line to the traffic events file:
+   00:05:00  405     N       7.07    2.390   R
+System: Changes all the dots between these two points to Red.   Restores all
+other dots on highway to their current color.
+System: Appends one line to the traffic events file:
+   00:05:00  405     N       7.07    2.390   R
+System: Automatically advances the time selector by 30 seconds to 0:05:30.
 }}}
 User continues to select highway segments to be assigned a specified color at a specified time.  These are all changes for a SINGLE incident.
 …
 Note the system does very little error checking.  It doesn't not verify that a manually entered time is subsequent to the current time and if a prior time is entered the sequence of events in the output file will be out of order.  There is no validation for time format.  If an invalid time is entered the output will shows "Invalid Date" instead of a time.
+The system does have one feature that prevent errors:  Once the first dot is selected, only a white dot may be chosen for the second dot.
+The system does have one feature that prevent errors:  Once the first dot is selected, only a white dot may be chosen for the second dot.
+The output file is `webapps/dynamicdata/traffic_events.txt`.