rootWebArea
++genericContainer ignored
++++genericContainer ignored
++++++genericContainer
++++++++genericContainer ignored invisible
++++++++++genericContainer ignored invisible
++++++++++genericContainer ignored invisible
++++++++++++genericContainer ignored invisible
++++++++genericContainer description='span-1' name='span-A' descriptionFrom=relatedElement
++++++++genericContainer description='span-2' name='span-B' descriptionFrom=relatedElement
++++++++genericContainer description='span-3' name='span-C' descriptionFrom=relatedElement
++++++++genericContainer description='span-4' name='span-D' descriptionFrom=relatedElement