TopoDiffLists.txt is a configurable flat text file which allows you to select which type of Objects to compare and what relationships and attributes to compare. If you do not want to compare some Object types which comes as default, place # at the beginning of the line where the Object, Relationship, or Attribute is defined.
You can ignore certain Classes in Relationship in order to reduce the size of report. For example, if there is no need to view the VLAN class in the Relationship, add an entry in the flat file as follows:
IgnoredInRel|VLAN