Inside the <diver> section all known data of the <owner> of the UDDF file, and the dive buddies (<buddy>) respectively, are stored.
While only one <owner> is possible, as many as necessary <buddy> elements can appear inside the <diver> section. Here <owner> is the first element to be given, thereafter all <buddy> elements.
Normally, the <diver> section must be given in an UDDF file — for the data of its <owner> (, and his/her dive <buddy>s) are stored with subsequent profile data. The only exception from this rule is an UDDF file which is used to set data on a dive computer. In this case the <diver> section can be omitted — as long as a person's data are not to be transferred to the divecomputer.
If dive data are to be sent to Project Dive Exploration in DL7 standard, the following information concerning the diver must be given (inside <buddy>, or <owner>, or in their subsections respectively):
<divecomputer> plus <serialnumber>
<membership> — external and internal DAN (PDE) member ID
full name: <firstname>, <middlename>, <lastname>, <honorific>,
<phone> and/or <mobilephone>
The following elements need not to be given, but are desirable:
<uddf>
<uddf version="3.1.0">
<generator>
<!-- here information about the software -->
</generator>
<diver>
<owner id="kai">
<!-- description of the owner of the UDDF file -->
</owner>
<buddy id="gerd">
<!-- description of the first dive buddy -->
</buddy>
<buddy id="dieter">
<!-- description of the second dive buddy -->
</buddy>
<buddy id="elmar">
<!-- description of the third dive buddy -->
</buddy>
<!-- here more <buddy> elements if necessary -->
</diver>
<!-- here more sections (<divesite>, <gasdefinitions>, <profiledata> etc.) -->
</uddf>