Is it possible with FLASHeff:NANO to stop the timeline when a symbol/text transition begins and then go to next frame when it ends? I have searched and everything seems to go to FLASHeff2 tutorials. I can't find anything for NANO. I can be a little dense when it comes to AS3 but when it clicks, it clicks :-)
Yes, on transitionStart event on flasheff you need to call stop method and on transitionEnd you will need to call nextFrame method. This applies for action script usage. If you are working on timeline directly there is no point of doing this.