Comparing IDOs during check-in
Before you check in an IDO that you have modified, you can compare it with the current version. You can use a file comparison tool to compare the new and the current version of an IDO. You must set up a comparison tool in User Preferences.
When you click IDO Collections form or the Mass Check In form, two XML files are created. The compare tool that you specified in User Preferences opens these two XML files to compare the contents.
on the