I've found some notation that I'm not familiar with in the violin part for the musical Tuck Everlasting. It's a horizontal arrow that starts at the stem of a note and points rightward along the staff:
I think it appears only once more in the entire violin part, in a different piece:
I suspect this is just an odd engraving error (of which there are others). A similar arrow is used in this book to highlight a jump in measure numbers; e.g. bar 36 will immediately follow bar 32 presumably due to cuts during revision, and this arrow will appear to the left of the number 36. It looks like it could be a misplaced arrow of this sort, but curiously there are no measure number jumps near either place where this appears.
If there were some meaning to this arrow I'm not sure why it would be present in bar 53 but not in 49, nor why it would appear on the first but not second note of bar 16. Just throwing this out there in case someone has seen something similar before.

