diff -r c94b55c3fb61 -r 424ba1d4ccef symbian3/os/usb/package_definition.xml
--- a/symbian3/os/usb/package_definition.xml	Wed Feb 03 11:49:07 2010 +0000
+++ b/symbian3/os/usb/package_definition.xml	Wed Feb 03 19:36:09 2010 +0000
@@ -1,125 +1,110 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE SystemDefinition [
- <!ELEMENT SystemDefinition (systemModel?,SystemBuild?)>
- <!ATTLIST SystemDefinition
-  name CDATA #REQUIRED
-  schema CDATA #REQUIRED>
- <!ELEMENT systemModel (layer+)>
- <!ELEMENT layer (block*|collection*)*>
- <!ATTLIST layer
-  name CDATA #REQUIRED
-  long-name CDATA #IMPLIED
-  levels NMTOKENS #IMPLIED
-  span CDATA #IMPLIED>
- <!ELEMENT block (subblock*|collection*)*>
- <!ATTLIST block
-  levels NMTOKENS #IMPLIED
-  span CDATA #IMPLIED
-  level NMTOKEN #IMPLIED
-  name CDATA #REQUIRED
-  long-name CDATA #IMPLIED>
- <!ELEMENT subblock (collection)*>
- <!ATTLIST subblock
-  name CDATA #REQUIRED
-  long-name CDATA #IMPLIED>
- <!ELEMENT collection (component)*>
- <!ATTLIST collection
-  name CDATA #REQUIRED
-  long-name CDATA #IMPLIED
-  level NMTOKEN #IMPLIED>
- <!ELEMENT component (unit)*>
- <!ATTLIST component
-  name CDATA #REQUIRED
-  long-name CDATA #IMPLIED
-  deprecated CDATA #IMPLIED
-  introduced CDATA #IMPLIED
-  contract CDATA #IMPLIED
-  plugin (Y|N) 'N'
-  filter CDATA #IMPLIED
-  class NMTOKENS #IMPLIED
-  supports CDATA #IMPLIED
-  purpose (optional|mandatory|development) 'optional'>
- <!ELEMENT unit EMPTY>
- <!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>
- <!ELEMENT SystemBuild (option*|target+|targetList+|list+|configuration+)*>
- <!ATTLIST SystemBuild schema CDATA #REQUIRED>
- <!ELEMENT list (ref+)>
- <!ATTLIST list
-  name ID #REQUIRED
-  description CDATA #REQUIRED>
- <!ELEMENT ref EMPTY>
- <!ATTLIST ref item CDATA #REQUIRED>
- <!ELEMENT targetList EMPTY>
- <!ATTLIST targetList
-  name ID #REQUIRED
-  description CDATA #REQUIRED
-  target IDREFS #REQUIRED>
- <!ELEMENT target EMPTY>
- <!ATTLIST target
-  name ID #REQUIRED
-  abldTarget CDATA #REQUIRED
-  description CDATA #REQUIRED>
- <!ELEMENT option EMPTY>
- <!ATTLIST option
-  name ID #REQUIRED
-  abldOption CDATA #REQUIRED
-  description CDATA #REQUIRED
-  enable (Y|N) #REQUIRED>
- <!ELEMENT configuration (listRef+|ref+|task+)*>
- <!ATTLIST configuration
-  name ID #REQUIRED
-  description CDATA #REQUIRED
-  filter CDATA #REQUIRED>
- <!ELEMENT task (listRef*,(buildLayer|specialInstructions))>
- <!ELEMENT listRef EMPTY>
- <!ATTLIST listRef list CDATA #REQUIRED>
- <!ELEMENT buildLayer EMPTY>
- <!ATTLIST buildLayer
-  command CDATA #REQUIRED
-  targetList IDREFS #IMPLIED
-  unitParallel (Y|N) #REQUIRED
-  targetParallel (Y|N) 'N'>
- <!ELEMENT specialInstructions EMPTY>
- <!ATTLIST specialInstructions
-  name CDATA #REQUIRED
-  cwd CDATA #REQUIRED
-  root CDATA #IMPLIED
-  command CDATA #REQUIRED>
-]>
-<SystemDefinition schema="2.0.1" name="Symbian^3">
-<systemModel>
-<layer name="os" long-name="OS" levels="hw services">
-<block name="usb" level="services" long-name="USB" levels="adaptation hw-if plugin framework server app-if">
-<collection name="usbldd" long-name="USB Logical Device Drivers" level="hw-if">
-<component name="usbclientdrivers" long-name="USB Client Drivers" introduced="8.1b" purpose="optional">
-<unit bldFile="/sf/os/kernelhwsrv/kernel/eka/drivers/usbc" mrp="/sf/os/kernelhwsrv/kernel/eka/drivers/usbc/base_e32_drivers_usbcli.mrp"/>
-</component>
-</collection>
-<collection name="usbmgmt" long-name="USB Management" level="server">
-<component name="usbmgr" long-name="USB Manager" purpose="optional">
-<unit bldFile="/sf/os/usb/usbmgmt/usbmgr/group" mrp="/sf/os/usb/usbmgmt/usbmgr/group/usb_manager.mrp" version="2"/>
-</component>
-<component name="usbmgrtest" long-name="USB Manager Tests" introduced="7.0" purpose="development">
-<unit mrp="/sf/os/usb/usbmgmt/usbmgrtest/group/usb_test.mrp" version="2"/>
-</component>
-<component name="usbclassandmgrdocs" long-name="USB Class and Manager Documentation" purpose="development" class="doc">
-<unit mrp="/sf/os/usb/usbmgmt/usbclassandmgrdocs/usb_documentation.mrp"/>
-</component>
-</collection>
-<collection name="usb_info" long-name="USB Info" level="app-if">
-<component name="usb_metadata" long-name="USB Metadata" introduced="tb92" purpose="development" class="config PC">
-<unit mrp="/sf/os/usb/usb_info/usb_metadata/usb_metadata.mrp"/>
-</component>
-</collection>
-</block>
-</layer>
-</systemModel>
-</SystemDefinition>
\ No newline at end of file
+<!DOCTYPE SystemDefinition [
+<!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
+  long-name CDATA #IMPLIED
+  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
+  long-name CDATA #IMPLIED
+>
+
+<!ELEMENT subblock (collection)*>
+<!-- Cellular Baseband Services, Networking Services, etc -->
+<!ATTLIST subblock
+  name CDATA #REQUIRED
+  long-name CDATA #IMPLIED
+>
+
+<!ELEMENT collection (component)*>
+<!-- Screen Driver, Content Handling, etc -->
+<!ATTLIST collection
+  name CDATA #REQUIRED
+  long-name CDATA #IMPLIED
+  level NMTOKEN #IMPLIED
+>
+
+<!ELEMENT component (unit)*>
+<!-- contains units or is a  package or prebuilt -->
+<!ATTLIST component
+  name CDATA #REQUIRED
+  long-name CDATA #IMPLIED
+  deprecated CDATA #IMPLIED
+  introduced CDATA #IMPLIED
+  contract CDATA #IMPLIED
+  plugin (Y|N) "N"
+  filter CDATA #IMPLIED
+  class NMTOKENS #IMPLIED
+  supports CDATA #IMPLIED
+  purpose ( optional | mandatory | development ) "optional"
+>
+
+<!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="Symbian^3" schema="2.0.1">
+  <systemModel>
+    <layer name="os" long-name="OS" levels="hw services">
+      <block name="usb" level="services" long-name="USB" levels="adaptation hw-if plugin framework server app-if">
+        <collection name="usbldd" long-name="USB Logical Device Drivers" level="hw-if">
+          <!-- usbclientdrivers  to be moved here from kernelhwsrv-->
+        </collection>
+        <collection name="usbextension" long-name="USB Extension" level="framework">
+          <component name="usbaudioclassdriver" long-name="USB Audi Class Driver" purpose="optional" filter="s60">
+            <unit bldFile="/sf/os/usb/usbextension/usbaudioclassdriver/group"/>
+          </component>
+        </collection>
+        <collection name="usbmgmt" long-name="USB Management" level="server">
+          <component name="usbmgr" long-name="USB Manager" purpose="optional">
+            <unit bldFile="/sf/os/usb/usbmgmt/usbmgr/group" mrp="/sf/os/usb/usbmgmt/usbmgr/group/usb_manager.mrp" version="2"/>
+          </component>
+          <component name="usbmgrtest" long-name="USB Manager Tests" introduced="7.0" purpose="development" filter="test">
+            <unit mrp="/sf/os/usb/usbmgmt/usbmgrtest/group/usb_test.mrp" bldFile="/sf/os/usb/usbmgmt/usbmgrtest/group" version="2"/>
+          </component>
+          <component name="usbclassandmgrdocs" long-name="USB Class and Manager Documentation" purpose="development" class="doc">
+            <unit mrp="/sf/os/usb/usbmgmt/usbclassandmgrdocs/usb_documentation.mrp"/>
+          </component>
+        </collection>
+        <collection name="usb_info" long-name="USB Info" level="app-if">
+          <component name="usb_plat" filter="s60" long-name="USB Platform Interfaces" class="api">
+            <unit bldFile="/sf/os/usb/usb_plat/group"/>
+          </component>
+          <component name="usb_metadata" long-name="USB Metadata" introduced="^3" purpose="development" class="config PC">
+            <unit mrp="/sf/os/usb/usb_info/usb_metadata/usb_metadata.mrp"/>
+          </component>
+        </collection>
+      </block>
+    </layer>
+  </systemModel>
+</SystemDefinition>