'Final cadence' for "Andante moderato" (string quartet)

Today's music is just one measure.

This is the final measure of 'Andante moderato', an 8-min string quartet performed several times by Acacia Quartet across NSW and Victoria last year and also on ABC Classic FM.

Despite all these performances, however, I never properly notated the final measure, which I instructed verbally at rehearsals. It requires two special effects. I finally did it today because someone asked to see the score.

And though I refer to it as a 'final measure', it also functions as the start of the next section of my perpetual work-in-progress String Quartet.