<owner> <buddy>
Within <diver> only the two elements <owner> (to be the first, allowed to appear only once (1)), and <buddy>, do exist — the last one can appear any times in the file. The following listing of elements is used within both elements. The only exception is the element <student> which may appear only inside <buddy> — denoting that this <buddy> is a student (if the <owner> of the UDDF file is a dive instructor).
<diver> <owner> bzw. <buddy> <student/> (only inside <buddy>) <personal> <firstname> <middlename> <lastname> <title> <sex> <birthdate> <date> <year> <month> <day> <dayofweek> <passport> <address> <street> <city> <postcode> <country> <province> <contact> <language> <phone> <mobilephone> <fax> <email> <homepage> <equipment> <buoyancycontroldevice> <name> <manufacturer> <name> <address> <street> <city> <postcode> <country> <province> <contact> <language> <phone> <mobilephone> <fax> <email> <homepage> <model> <serialnumber> <purchase> <date> <year> <month> <day> <dayofweek> <price> <shop> <name> <address> <street> <city> <postcode> <country> <province> <contact> <language> <phone> <mobilephone> <fax> <email> <homepage> <notes>... <serviceinterval> <nextservicedate> <date> <year> <month> <day> <dayofweek> <notes>... <boots> <all elements which appear under <buoyancycontroldevice> can also stand here> <camera> <body> <all elements which appear under <buoyancycontroldevice> can also stand here> <lens> <all elements which appear under <buoyancycontroldevice> can also stand here> <housing> <all elements which appear under <buoyancycontroldevice> can also stand here> <flash> <all elements which appear under <buoyancycontroldevice> can also stand here> <compass> <all elements which appear under <buoyancycontroldevice> can also stand here> <compressor> <all elements which appear under <buoyancycontroldevice> can also stand here> <divecomputer> <all elements which appear under <buoyancycontroldevice> can also stand here> <fins> <all elements which appear under <buoyancycontroldevice> can also stand here> <gloves> <all elements which appear under <buoyancycontroldevice> can also stand here> <knife> <all elements which appear under <buoyancycontroldevice> can also stand here> <lead> <all elements which appear under <buoyancycontroldevice> can also stand here> <lens> <all elements which appear under <buoyancycontroldevice> can also stand here> <light> <all elements which appear under <buoyancycontroldevice> can also stand here> <mask> <all elements which appear under <buoyancycontroldevice> can also stand here> <rebreather> <all elements which appear under <buoyancycontroldevice> can also stand here> <regulator> <all elements which appear under <buoyancycontroldevice> can also stand here> <scooter> <all elements which appear under <buoyancycontroldevice> can also stand here> <suit> <all elements which appear under <buoyancycontroldevice> can also stand here> <tank> <all elements which appear under <buoyancycontroldevice> can also stand here> <tankmaterial> <variouspieces> <all elements which appear under <buoyancycontroldevice> can also stand here> <videocamera> <body> <all elements which appear under <buoyancycontroldevice> can also stand here> <lens> <all elements which appear under <buoyancycontroldevice> can also stand here> <housing> <all elements which appear under <buoyancycontroldevice> can also stand here> <light> <all elements which appear under <buoyancycontroldevice> can also stand here> <watch> <all elements which appear under <buoyancycontroldevice> can also stand here> <medical> <examination> <date> <year> <month> <day> <dayofweek> <doctor> <personal> <firstname> <middlename> <lastname> <title> <sex> <birthdate> <date> <year> <month> <day> <dayofweek> <address> <street> <city> <postcode> <country> <province> <contact> <language> <phone> <mobilephone> <fax> <email> <homepage> <examinationresult> <notes>... <education> <certification> <level> <specialty> <organization> <instructor> <personal> <firstname> <middlename> <lastname> <title> <sex> <birthdate> <date> <year> <month> <day> <dayofweek> <address> <street> <city> <postcode> <country> <province> <contact> <language> <phone> <mobilephone> <email> <homepage> <issuedate> <date> <year> <month> <day> <dayofweek> <validdate> <date> <year> <month> <day> <dayofweek> <notes>... <divepermissions> <permit> <name> <region> <issuedate> <date> <year> <month> <day> <dayofweek> <validdate> <date> <year> <month> <day> <dayofweek> <notes>... <diveinsurances> <insurance> <name> <issuedate> <date> <year> <month> <day> <dayofweek> <validdate> <date> <year> <month> <day> <dayofweek> <notes>...