<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE SystemDefinition [
 <!ELEMENT SystemDefinition (systemModel)>
 <!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>
]>
<SystemDefinition name="Symbian^4" 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="usb_plat" long-name="USB Platform Interfaces" level="app-if">
<!-- placeholder for platform APIs -->
</collection>
<collection name="usbldd" long-name="USB Logical Device Drivers" level="hw-if">
<!-- usbclientdrivers  to be moved here from kernelhwsrv-->
</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="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="^3" purpose="development" class="config PC">
<unit mrp="/sf/os/usb/usb_info/usb_metadata/usb_metadata.mrp"/>
</component>
</collection>
</block>
  </layer>
 </systemModel>
</SystemDefinition>