I haven't used BYOND in a while, so I can't see if this is still possible.

Back when I used to use BYOND, I was able to reduce the speed that animations...animated. Instead of adding duplicates of the same sprite, you would be able to just change this variable in the spirte, and it would take longer to switch between frames. Is this still possible?
All I can find is:
# of Frames
# of Directions
Rewind (Yes/No Checkbox)
Loop: Indefinitely or a set number.

I assume the last of the options would have the entire animation only show once during runtime, so that's not what I'm looking for.