By means of <getdcgasdefinitionsdata/> the dive computer is instructed to send data concerning stored breathing gases to the calling software/device.
(see also <divecomputercontrol>)
<uddf version="3.1.0"> <generator> <!-- here information about the data downloading software --> </generator> <divecomputercontrol> <getdcdata> <!-- request to send all stored breathing gas information --> <!-- on the dive computer to the calling software --> <getdcgasdefinitionsdata/> </getdcdata> </divecomputercontrol> </uddf>