On the DDD, lock the target then hold the interrogate button. It will then show as friend or foe on the DDD. Using the information you have gathered here you can then manually change the target type on the TID.
Remember everything on the TID is a combination on what you have and data link. Data link being the bottom half, top half being your radar.
This means you could have something in the datalink system bottom half enemy that you have identified and tag as a friend top half.
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