<alarm> — additional error message link

<audio>, <image>, <video> — new parent element <mediadata> (the previous parent element <notes> is abolished — inside <notes> from now on only cross-references via <link/> on previously in the <mediadata> section declared <audio>, <image>, and <video> elements is possible)

<datetime> (former <date>) — additional parent element <dateofflight>, <dateofrecompressiontreatment>

<dive> — additional child elements <alcoholbeforedive>, <anysymptoms>, <apparatus>, <current>, <diveplan>, <divetable>, <equipmentmalfunction>, <highestpo2>, <hyperbaricfacilitytreatment>, <link/> (for cross-referencing <site>, or <table> data), <medicationbeforedive>, <nosuit/>, <platform>, <pressuredrop>, <problems>, <program>, <purpose>, <stateofrestbeforedive>, <tankdata>, <thermalcomfort>, <workload>

<divebase> — new parent element <divesite>, old parent element <trip> removed

<divesite> — new child element <divebase>

<gasdefinitions> — child element <tankdata> moved to <dive>

<guide> — no child element <buddyref/> anymore; but <link/> (for cross-referencing a <buddy>, indicating he/she as guide

<lead> — additional child element <leadquantity>

<medical> — additional child elements <prescribedmedicine>

<mix> — additional child element <notes>

<notes> — additional parent elements <hyperbaricfacilitytreatment>, <mix>

<personal> — additional child elements <birthname>, <bloodgroup>, <membership/>, <height>, <numberofdives/>, <smoking>, <weight>

<relateddives> — additional parent elements <hyperbaricfacilitytreatment>

<site> — additional child element <environment>

<sitedata> — additional child element <hyperbaricfacility>

<suit> — additional child element <suittype>

<tank> — additional child element <tankvolume>

<tankdata> — element moved from <gasdefinitions> to <dive>

<tankvolume> — additional parent element <tank>

<trip> — new child element <link/> (for cross-referencing a dive base), child element <divebase> removed

<waypoint> — additional child elements <batterychargecondition>, <heading>, <remainingbottomtime>, <remainingo2time>, <tankpressure>

<surfaceinterval> → <surfaceintervalbeforedive>

<title> → <honorific> (please note that there is a new element <title> which describes a mediadata file — <audio>, <image>, or <video>)

<date> — now see <datetime>

<day> — now see <datetime>

<enddate> — now see <dateoftrip>

<hour> — now see <datetime>

<minute> — now see <datetime>

<month> — now see <datetime>

<setdcdate> — now see <setdcdatetime>

<setdctime> — now see <setdcdatetime>

<startdate> — now see <dateoftrip>

<text> — now see <para>

<time> — now see <datetime>

<year> — now see <datetime>

<alcoholbeforedive> (see <dive>)

<altitudeofexposure> (see <exposuretoaltitude>)

<anysymptoms> (see <dive>)

<apparatus> (see <dive>)

<batterychargecondition> (see <waypoint>)

<birthname> (see <personal>)

<bloodgroup> (see <personal>)

<current> (see <dive>)

<dateofflight> (see <exposuretoaltitude>)

<dateoftrip> (see <trip>)

<dateofrecompressiontreatment> (see <hyperbaricfacilitytreatment>)

<datetime> — former splitted into <date> and <time>

<dcdump> (see <divecomputerdump>)

<divecomputerdump> (see <divecomputercontrol>)

<diveplan> (see <dive>)

<divetable> (see <dive>)

<drink> (see <alcoholbeforedive>)

<equipmentmalfunction> (see <dive>)

<environment> (see <site>)

<heading> (see <waypoint>)

<height> (see <personal>)

<highestpo2> (see <dive>)

<hyperbaricfacility> (see <sitedata>)

<hyperbaricfacilitytreatment> (see <dive>)

<leadquantity> (see <lead>)

<link/> — with UDDF version 3.0.0 this cross-referencing element replaces all specific cross-referencing elements (e.g. <audioref/> etc.)

<mediadata> — new "main" section in <uddf>

<medicationbeforedive> (see <dive>)

<medicine> (see <medicationbeforedive>)

<membership/> (see <personal>)

<nosuit/> (see <dive>)

<numberofdives/> (see <personal>)

<numberofrecompressiontreatments> (see <hyperbaricfacilitytreatment>)

<opensourcetauchcomputerheinrichsweikamp> (see <applicationdata>)

<periodicallytaken> (see <drink> and <medicine>)

<prescribedmedicine> (see <medical>)

<platform> (see <dive>)

<pressuredrop> (see <dive>)

<problems> (see <dive>)

<program> (see <dive>)

<purpose> (see <dive>)

<remainingbottomtime> (see <waypoint>)

<remainingo2time> (see <waypoint>)

<setdcdatetime> (see <setdcdata>)

<smoking> (see <personal>)

<stateofrestbeforedive> (see <dive>)

<suittype> (see <suit>)

<surfaceintervalbeforealtitudeexposure> (see <exposuretoaltitude>)

<tankpressure> (see <waypoint>)

<thermalcomfort> (see <dive>)

<timespanbeforedive> (see <drink> and <medicine>)

<title> describes a <mediadata> file (<audio>, <image>, or <video>) — see also <honorific> which replaces the old <title> element)

<totallengthofexposure> (see <exposuretoaltitude>)

<transportation> (see <exposuretoaltitude>)

<weight> (see <personal>)

<workload> (see <dive>)