repeatDur attribute for animation
Animations with indefinite repeatDur:
cx of an ellipse is animated from 300 to 700 with a duration
of 10.2314s.
cy of an ellipse is animated from 300 to 700 with a duration
of 11.5629s.
rx of an ellipse is animated from 50 to 300 with a duration
of 8.0021s.
ry of an ellipse is animated from 50 to 300 with a duration
of 12.2031s.
fill is animated over several values with a duration of 15.7691s.
stroke is animated over several values with a duration of 16.0041s.
stroke-width is animated over several values with a duration of 10.1034s.