+ very bottom. It also lets you configure how
+ the graph is drawn:
+
+ * Whether to use metric or imperial units
+
+ * Whether to show a marker at each data
+ point. When displaying a small section of
+ the graph, these can be useful to know what
+ data values were recorded.
+
+ * How wide to draw the lines in the graph
+
+ * How to filter speed and acceleration data
+ computed from barometric data. Flight
+ computers with accelerometers never display
+ computed acceleration data, and only use
+ barometric data to compute speed during
+ descent. Flight computers without
+ accelerometers always compute both speed and
+ acceleration from barometric data. A larger
+ value smooths the data more.