The following is an example of a compare report:
PDS Catalog Ingestion Tool Report
  Version                1.0.0
  Date                   Tue, Jan 05 2010 at 08:12:46 AM
Parameter Settings:
  Mode                   Compare
  Target(s)
    Source = file:/C:/catalog-files/diff/dir1/
    Target = file:/C:/catalog-files/diff/dir2/
  Directory Recursion    true
  Severity Level         WARNING
Summary:
  [X] Differences Found
  [ ] No Differences Found
Compare Details:
  DIFFERENT: file:/C:/catalog-files/diff/dir2/DATASET.CAT
      line 2: Element RECORD_TYPE has different value than source
         Source: line 13 of file:/C:/catalog-files/diff/dir1/DATASET.CAT
         13c2
         < FIXED_LENGTH
         ----
         > STREAM
      line 3: Element LABEL_REVISION_NOTE has different value than source
               Source: line 2 of file:/C:/catalog-files/diff/dir1/DATASET.CAT
         12d13
         < 2005-07-29 RS:simpson incorporated aerobraking data
         ----
      line 16: Element DATA_SET_ID has different value than source
         Source: line 17 of file:/C:/catalog-files/diff/dir1/DATASET.CAT
         17c16
         < ODY-M-RSS-1-RAW-V1.0
         ----
         > ODY-M-RSS-1-RAW-V2.0
      line 31: Element ARCHIVE_STATUS not present in source
      line 28: Element DATA_SET_TERSE_DESC not present in source
      line 32: Element CITATION_DESC not present in source
      line 786: Object DATA_SET_TARGET not present in source
  SAME: file:/C:/catalog-files/diff/dir2/MISSION.CAT
End of Report