It is however possible to specify several tracks of annotations within one CMML file. To that end, you need to give each track that you're using a name. This name needs to be written into the "track" attribute of the clip tags which belong onto that track. Not providing a track attribute attaches the clip to the default track.
Take care that the clips in one annotation track do not overlap in time.
This is an example of such a multi-track annotation specification:
<clip track="german" lang="de" id="intro_ge" start="npt:0"> <a href="http://www.blah.au/fish.html">Lesen Sie mehr über Fische.</a> <desc>Dies ist die Einleitung zum Film über Fische von Joe.</desc> </clip> <clip track="default" lang="en" id="intro" start="npt:0"> <a href="http://www.blah.au/fish.html">Read more about fish.</a> <desc>This is the introduction to the film Joe made about fish.</desc> </clip> <clip track="german" id="dolphin_ge" start="npt:3.5"> <desc>Joe hat einen Delphin im Meer entdeckt.</desc> <meta name="Thema" content="Delphin"/> </clip> <clip id="dolphin" start="npt:3.5"> <desc>Here, Joe caught sight of a dolphin in the ocean.</desc> <meta name="Subject" content="dolphin"/> </clip>