Rotate text at each marker without manually adding keyframes

[TIneke Van Schalkwyk]

Do you think it is possible to rotate the text at each marker along the layer cycling through:
0, -5, 0, 5 degrees.

[Dan Ebberts]

Probably something similar to this:

m = marker;
n = m.nearestKey(time).index;
if (time < m.key(n).time) n--;
r = 0;
if (n > 0){
  n = (n -1)%4;
  if (n == 1)
    r = -5
  else if (n == 3)
    r = 5;
}
r