The first of the boxes is the starting bar.

The missing bars is the intro.

The next box is the ending bar.

The one on the far right is the number of repeats.

The tag ending goes after the 2nd number and plays until the actual ending.

If the 3 boxes read 8 40 and 3 the song starts at 1 for the intro, the verse starts at 8 and plays to 40 3 times, then it goes to the tag and thus to the end.

John Conley
Musica est vita