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SiRF: This is the name of a popular GPS chipset manufacturer. Their specific
communication protocol can be processed by iGO. SiRF based GPS devices are
also capable of NMEA communication, the factory setting of communication protocol
in iGO.
Track log: In iGO you have the possibility to record your journeys using the position
data your GPS provides in every second or every few seconds (depending on your
GPS settings). When you start the recording, position data are saved in the database
until you stop recording it. This set of sequential GPS positions is called track log.
Each set of consecutive positions has a name (originally it is the time of recording
but you can change it to any name you like) and a colour in which it can be displayed
on the map. Later you can replay the journey on the screen of iGO as if it were
happening again. This is good for demonstration purposes or for analysing your
manoeuvres during the trip. See also
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Track-up: A kind of map orientation when the map is rotated to look always in the
direction of your heading. See also North-up and Map Orientation.
Via point: Routes in iGO can have several (as many as you want) different
destinations to reach in a specific order. All these points except the final destination
are called via points, as the route goes ‘via’ (through) them. The destinations can be
seen in the Route Information screen on the Route line (Page ), and each via point
is announced by the voice instructions as you approach and when you reach it.
Should your via point serve as a stopover, navigation continues automatically as you
depart. Navigation will resume even if you turn off and on your PDA or restart
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iGO.
Zoom In and Out: The Zoom function is used to change the scale of the map. Use
Zoom In to scale down the map to see less of it but in more detail, and use Zoom
Out to scale the map up to have a broader view of that part of the map with fewer
details. See also Page and Page 20 30.
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