On Fri, Mar 8, 2019 at 3:17 PM Will Martin <willmartin2@mac.com> wrote:

{rIn} , pronounced “reen” was used to mark the end of communication via radio in one of the movies.

For those playing along at home, it was used that way in the Morskan listening post scene in ST6.

{rIntaH} was used in ST3 in the line {qa’vam De’ vIje’ rIntaH} spoken by valQIS. I think this is the only time in canon that it has been used

No longer! It's used twice in the paq'batlh.

ghIq Qo'noSDaq Qap rIntaH 'e' Sov
    qeylIS
    qotar lIjbe'

Then, the time came when Kahless saw
    That his work on Kronos was done,
    He did not forget Kotar.

(Canto tlheDrup qeylIS, book paq'QIH, I don't have page or line numbers at the moment)

porgh HoH wa' 'etlh
    qa' tlhabmoH wa' 'etlh
    tlhIngan choHlu' rIntaH

One blade to extinguish the physical life,
    One blade for freeing the soul,
    The Klingon's transition was complete.

(Canto qeylIS Heghbat, book paq'QIH)

In the second example, the verb doesn't even have an explicit subject, sentient or otherwise, just a -lu'.