<?xml version="1.0" encoding="UTF-8"?>
<!--

	some useful definitions.
	
	color and coordinates should be put in a separate dtd.

-->
<!ELEMENT base_ref EMPTY>
<!ATTLIST base_ref
	uuid CDATA #REQUIRED
	name CDATA #IMPLIED
>
<!ELEMENT table_ref (base_ref?)>
<!ATTLIST table_ref
	uuid CDATA #REQUIRED
	name CDATA #IMPLIED
>
<!ELEMENT field_ref (table_ref?)>
<!ATTLIST field_ref
	uuid CDATA #REQUIRED
	name CDATA #IMPLIED
>
<!ELEMENT index_ref EMPTY>
<!ATTLIST index_ref
	uuid CDATA #REQUIRED
>
<!ELEMENT color EMPTY>
<!ATTLIST color
	red CDATA #REQUIRED
	green CDATA #REQUIRED
	blue CDATA #REQUIRED
	alpha CDATA #IMPLIED
>
<!ELEMENT coordinates EMPTY>
<!ATTLIST coordinates
	left CDATA #IMPLIED
	top CDATA #IMPLIED
	right CDATA #IMPLIED
	bottom CDATA #IMPLIED
	width CDATA #IMPLIED
	height CDATA #IMPLIED
>
<!--

	Field tips are always plain text.

-->
<!ELEMENT tip (#PCDATA)>
<!--

	Comments are rtf tagged text (with an attribute in clear (for read only)

-->
<!ELEMENT comment (#PCDATA)>
<!ATTLIST comment
  format CDATA #IMPLIED
 >

<!--

	QuickTime SCSpatialSettings structure

-->
<!ELEMENT qt_spatial_settings EMPTY>
<!ATTLIST qt_spatial_settings
	codec_type CDATA #REQUIRED
	depth NMTOKEN #REQUIRED
	spatial_quality NMTOKEN #REQUIRED
>