Character reference
A character reference was a recommendation of an individual by those who knew them. It attested to their abilities and virtues.

In 2258 of the alternate reality,  entered the bridge of the  and informed  of his intention to be considered for the position of first officer. He offered to provide character references, but Kirk didn't see the need. ()

When Benjamin Sisko referred to Quark as the community leader for Deep Space 9 in 2369, Odo drily dispelled the Ferengi's disbelief by saying he had all the character references of a politician. ()

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Communication