<?xml version="1.0"?>

<!DOCTYPE SystemDefinition1 [

<!ELEMENT SystemDefinition ( systemModel )>

<!ATTLIST SystemDefinition

  name CDATA #REQUIRED

  schema CDATA #REQUIRED

>

<!-- all paths are relative to the environment variable specified by the root attribute, or SOURCEROOT if not.  -->

<!-- System Model Section of DTD -->

<!ELEMENT systemModel (layer+)>

<!ELEMENT layer (block* | collection*)*>

<!-- Kernel Services, Base Services, OS Services, Etc -->

<!ATTLIST layer

  name CDATA #REQUIRED

  levels NMTOKENS #IMPLIED

  span CDATA #IMPLIED

>

<!ELEMENT block (subblock* | collection*)*>

 <!-- Generic OS services, Comms Services, etc -->

<!ATTLIST block

  levels NMTOKENS #IMPLIED

  span CDATA #IMPLIED

  level NMTOKEN #IMPLIED

  name CDATA #REQUIRED

>

<!ELEMENT subblock (collection)*>

<!-- Cellular Baseband Services, Networking Services, etc -->

<!ATTLIST subblock

  name CDATA #REQUIRED

>

<!ELEMENT collection (component)*>

<!-- Screen Driver, Content Handling, etc -->

<!ATTLIST collection

  name CDATA #REQUIRED

  level NMTOKEN #IMPLIED

>

<!ELEMENT component (unit)*>

<!-- contains units or is a  package or prebuilt -->

<!ATTLIST component

  name CDATA #REQUIRED

  deprecated CDATA #IMPLIED

  introduced CDATA #IMPLIED

  contract CDATA #IMPLIED

  plugin (Y|N) "N"

  filter CDATA #IMPLIED

  class NMTOKENS #IMPLIED

  supports CDATA #IMPLIED

>

<!ELEMENT unit EMPTY >

<!-- must be buildable (bld.inf) -->

<!-- bldFile  may someday be removed in favour of mrp -->

<!ATTLIST unit

  mrp CDATA #IMPLIED

  filter CDATA #IMPLIED

  bldFile CDATA #IMPLIED

  root CDATA #IMPLIED

  version NMTOKEN #IMPLIED

  prebuilt NMTOKEN #IMPLIED

  late (Y|N) #IMPLIED

  priority CDATA #IMPLIED

>

]>

<SystemDefinition name="TCL" schema="2.0.0">

	<systemModel>

		<layer name="Unclassified">

			<collection name="foo1">

				<component name="foo2" filter="foo1">

					<unit mrp="an.mrp"/>

				</component>

			</collection>

		</layer>

		<layer name="bar1">

			<block name="bar2">

				<collection name="bar3">

					<component name="bar4" filter="bar1">

						<unit mrp="another.mrp"/>

					</component>

				</collection>

			</block>

		</layer>

		<layer name="bash" levels="low">

			<block name="bash2" level="low">

				<collection name="bash2">

					<component name="bash3" filter="bash4">

						<unit mrp="yetanother.mrp"/>

					</component>

				</collection>

				<collection name="bash5">

					<component name="bash6" filter="bash4">

						<unit bldFile="group" mrp="fudge.mrp"/>

					</component>

				</collection>

			</block>

		</layer>

	</systemModel>

</SystemDefinition>