1 <?xml version="1.0"?>

     2 <!DOCTYPE SystemDefinition SYSTEM "sysdef_1_5_1.dtd" [

     3   <!ENTITY layer_real_source_path "sf/app/phone" >

     4 ]>

     5 

     6 <SystemDefinition name="phone" schema="1.5.1">

     7   <systemModel>

     8     <layer name="app_layer">

     9       <module name="phone">

    10         <unit name="phone" unitID="tedo.phone" bldFile="&layer_real_source_path;" mrp="" proFile="phone.pro" />

    11       </module>

    12     </layer>

    13   </systemModel>

    14 </SystemDefinition>