Welcome to the #dominoforever Product Ideas Forum! The place where you can submit product ideas and enhancement request. We encourage you to participate by voting on, commenting on, and creating new ideas. All new ideas will be evaluated by HCL Product Management & Engineering teams, and the next steps will be communicated. While not all submitted ideas will be executed upon, community feedback will play a key role in influencing which ideas are and when they will be implemented.
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Maybe this helps, too: Open the Package Explorer view in Designer. Select the two design elements that you wish to compare (possibly from two different Notes databases), then right-click and run Compare With > Each Other.
This feature has been provided - we have shipped a tool (=Domino application) which allows to compare the design of two applications/templates. https://help.hcltechsw.com/dom_designer/12.0.0/basic/wn_databasecompare.html