A complete scene definition would look something like:
<svg ...>
SVG commands
<metadata>
<scenes>
<timing>18.97s</timing>
<startid_text>strt</startid_text>
<begin_text>strt0</begin_text>
<scene_origin>1</scene_origin>
<objbg transform="translate(0,0,-300)">
<obj class="mt01" href="mt01"/>
<obj class="mt02" href="mt02"/>
</objbg>
<objbg transform="rotx(90)">
<obj class="fg01" href="fg01"/>
<obj class="fg02" href="fg02"/>
</objbg>
<scene id="st1">
<perspective>
<over>-20</over>
<up>-11</up>
<rad>1600</rad>
<pp>1800</pp>
<newx>0</newx>
<newy>0</newy>
<scale>1</scale>
<spline>constant</spline>
</perspective>
<objfg transform="translate(-145,-64,80) roty(45)">
<obj class="wdm3" href="wdm01" transform="rotz(60)" />
<obj class="wdm4" href="wdm02" transform="rotz(60)" />
</objfg>
</scene>
<scene id="st2">
....
</scene>
<objbgafter transform="rotx(90)">
<obj class="fg01" href="fg01"/>
<obj class="fg02" href="fg02"/>
</objbgafter>
</scenes>
</metadata>
<defs>
<path id="mt01" d="M-2000,-494v494h4000v-494z"/>
<path id="mt02" d="M2000,-57C966,-67 933,-67 900,-57..."/>
<path id="fg01" d="..."/>
<path id="fg02" d="......"/>
<path id="wdm01" d="..."/>
<path id="wdm02" d="......"/>
<path3d id="xyz" d="M0,-140,-130 Ll0,0,-40 Ll0,-40,0 Ll0,0,40Z"/>
<point id="FA" x="0" y="0" z="0"/>
<point id="FD" x="-300" y="0" z="0"/>
<point id="BA" x="0" y="0" z="-300"/>
<point id="BD" x="-300" y="0" z="-300"/>
<p_path3d id="w19Hut_floor"> <M p="FA"/><L p="BA"/><L p="BD"/><L p="FD"/><Z /></p_path3d>
</defs>
SVG commands
</svg>