Orchestral reduction

Hi Larry, Remember me? It's been a long time since I have had a paying transcription job, which is why the long silence. One of the excerpts I have to transcribe (from Haydn's Concerto for Trumpet) has a line for trumpet in E flat and beneath it, two staffs called "Orchestral Reduction." The entire notation certainly makes it look like it's meant to be played on the piano. My question is, how do I indicate at the left margin what the print shows, that "orchestral reduction" bit? Should I include a brief abbreviation, like "or" in the listing of the instruments at the top of the music? and then put that at the margin in each parallel, beneath the "tr" for the trumpet? Also, from looking at the sample scores in the Music Braille Code, I can't figure whether it is necessary to include the "E flat" in the abbreviation, since there is only one trumpet involved. I assume that I define the instrument as "Trumpet in E flat" at the top of the score but maybe do not need to include "E flat" in the marginal indication for that staff. Finally, I believe it is necessary for me to use the right- and left-hand signs to begin the staffs for the "orchestral reduction," since it is obviously intended to be played on the piano.

It's great to be working on something with a few challenges again.

Gil