# Compare Reference Sets
To execute a Reference Sets compare, navigate to `Tools > Compare reference sets...` menu item.
Compare reference sets feature
A wizard opens where the `Base` and the `Target` Reference Sets can be selected from the lists for comparison.
Compare wizard
After the comparison process, a dedicated read-only editor opens with a table summarizing the results of the comparison. A Summary section at the top displays the overall statistics of the comparison, which can be collapsed. The summary part - as well as the `Explanation` column below - determines the status of the given mapping according to the selected *Base (Abdominal Pain 1)* Reference Set. For example, if a mapping receives a `Missing` status, then it is missing from the *Base* *(Abdominal Pain 1)* Reference Set and only the *Target (Abdominal Pain 2)* Reference Set contains that particular mapping.
Identical mappings can be filtered out by clicking on the  **Hide identical mappings** button in the top-right corner of the editor.
The editor toolbar also offers the  **Export the compare results separated by semicolon to a text file** button which enables users to export the necessary information from the Map Compare Result.
