1 Look in the generated drawsvg_temp\system_model_svg_tmp.xml file:

     2 

     3 1. every item (not units) in the hardware layer should have: <... foo="bar" baz="xyzzy">

     4 	Nothing else should have foo or baz attributes.

     5 

     6 2. MTP Data Providers and all children (not units) should have <... this="comm"  that="no">

     7 

     8 3. Generic OS Services shold have:    <block name="Generic OS Services" levels="physical-abstraction app-libs encoding translation data-services utilities" comment="This package is...">

     9 	Nothing else should have a comment attribute