<!--
************************************************************************
XML DTD for FlightGear Materials.

This DTD is advisory only: it is perfectly legal to include additional
properties in materials.xml.
************************************************************************
-->

<!ENTITY % colours "r?, g?, b?, a?">

<!ELEMENT PropertyList (material+)>
<!ELEMENT material (name+, texture, wrapu?, wrapv?, mipmap?, xsize?, ysize?,
		    light-coverage?, ambient?, diffuse?, specular?, emissive?)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT texture (#PCDATA)>
<!ELEMENT wrapu (#PCDATA)>
<!ELEMENT wrapv (#PCDATA)>
<!ELEMENT mipmap (#PCDATA)>
<!ELEMENT xsize (#PCDATA)>
<!ELEMENT ysize (#PCDATA)>
<!ELEMENT light-coverage (#PCDATA)>
<!ELEMENT ambient (%colours;)>
<!ELEMENT diffuse (%colours;)>
<!ELEMENT specular (%colours;)>
<!ELEMENT emissive (%colours;)>
<!ELEMENT r (#PCDATA)>
<!ELEMENT g (#PCDATA)>
<!ELEMENT b (#PCDATA)>
<!ELEMENT a (#PCDATA)>
