<?xml version="1.0" encoding="UTF-8"?>
<!--This is the DTD for traditional, GLI-based light.-->
<!ELEMENT gliLight (li_heightOfFishEyePhoto?, li_beamFractGlobalRad?, 
  li_clearSkyTransCoeff?, li_julianDayGrowthStarts?, li_julianDayGrowthEnds?,
  li_minSunAngle, li_numAltGrids, li_numAziGrids, 
  li_lightExtinctionCoefficient?, li_snag1LightExtinctionCoefficient?,
  li_snag2LightExtinctionCoefficient?, li_snag3LightExtinctionCoefficient?,
  li_snagAgeClass1?, li_snagAgeClass2?)>

<!--
    Core light elements
    These are referenced by all light DTDs because they are
    needed by all light behaviors and the values are held in
    common.  These can appear in any of the light behavior 
    sections if this particular DTD isn't being used.    
-->
<!--Height of the simulated fish-eye photo on a tree - the photo
 can be "taken" at the top of the crown or halfway down the
 crown.  Allowed values are 0 = mid-crown, and 1 = crown top.-->
<!ELEMENT li_heightOfFishEyePhoto (#PCDATA)>
<!--The fraction of global radiation that is beam radiation-->
<!ELEMENT li_beamFractGlobalRad (#PCDATA)>
<!--Clear sky light transmission coefficient-->
<!ELEMENT li_clearSkyTransCoeff (#PCDATA)>
<!--The day of the year that growth starts (expressed as a julian
 day - number between 1 and 365-->
<!ELEMENT li_julianDayGrowthStarts (#PCDATA)>
<!--The day of the year that growth ends (expressed as a julian
 day - number between 1 and 365-->
<!ELEMENT li_julianDayGrowthEnds (#PCDATA)>
<!--Crown light extinction coefficient of live trees - species-specific-->
<!ELEMENT li_lightExtinctionCoefficient (li_lecVal+)*>
<!ELEMENT li_lecVal (#PCDATA)>
<!ATTLIST li_lecVal	species IDREF #REQUIRED>
<!--Crown light extinction coefficient of snags, age class 1 - species-specific-->
<!ELEMENT li_snag1LightExtinctionCoefficient (li_s1lecVal+)*>
<!ELEMENT li_s1lecVal (#PCDATA)>
<!ATTLIST li_s1lecVal	species IDREF #REQUIRED>
<!--Crown light extinction coefficient of snags, age class 2 - species-specific-->
<!ELEMENT li_snag2LightExtinctionCoefficient (li_s2lecVal+)*>
<!ELEMENT li_s2lecVal (#PCDATA)>
<!ATTLIST li_s2lecVal	species IDREF #REQUIRED>
<!--Crown light extinction coefficient of snags, age class 3 - species-specific-->
<!ELEMENT li_snag3LightExtinctionCoefficient (li_s3lecVal+)*>
<!ELEMENT li_s3lecVal (#PCDATA)>
<!ATTLIST li_s3lecVal	species IDREF #REQUIRED>
<!--Snag age class 1 upper age value-->
<!ELEMENT li_snagAgeClass1 (#PCDATA)>
<!--Snag age class 2 upper age value-->
<!ELEMENT li_snagAgeClass2 (#PCDATA)>

<!--
	These elements are specific to this particular behavior
	and would only appear as a child to the gliLight
	tag.  These are then required as children of the
	gliLight tag.
-->
<!ELEMENT li_minSunAngle (#PCDATA)>
<!ELEMENT li_numAltGrids (#PCDATA)>
<!ELEMENT li_numAziGrids (#PCDATA)>

