Many more coming...
With a detailed tutorial on how to do animation

ON ENTER { 1 ME SETALARM }
ON ALARM {
6 pics = ;change 6 to the number of pictures you have
ME GETSPOTSTATE 1 + DUP pics / pics * -
ME SETSPOTSTATELOCAL
30 ME SETALARM
;make 30 higher to slow down, lower to speed up
}