The <alarm> element indicates the type of alarm the dive computer gives at a <waypoint>. Several <alarm> elements may appear inside a <waypoint> element, one for each reason of alarm respectively.
At time the following keywords are recognised:
keyword announcement of dive computer
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rbt remaining bottom time exceeded
error general error (deco stop missed, etc.)
ascent ascent too fast
deco announcement of a deco stop
breath breathing frequency too high
surface surface reached
<waypoint>
<waypoint>