Serendipidy Haven

Wow! Thanks everyone for the really helpful responses - I think I'm going to have to go back to the drawing board and start again from scratch! Some of it is still a little bit over my head, but I'm sure with a bit of perseverence I can work it out. Lots to think about and play with!

Novice wannabe scripter here - fascinating and informative thread that's been incredibly helpful - and seems to be the only one that remotely addresses what I'm looking for - but now I've come against a wall and can't figure out the solution. Developing OP's original query further, I want to illuminate each prim in a linkset sequentially eg individual letters in a sign, in order, then repeat. I thought I could use Rolig's suggestion for illuminating 2 prims alternately, but I couldn't work out a way to extend it beyond the second prim. Instead, I used a variation of the script in each prim, using llsleep to insert a pause before illuminating each subsequent prim. It works, but I'm sure there's a more elegant way to do it, without the need for all those scripts! Also, it seems you only have to breathe on it for the sequence to go wonky and require a reset. Can anyone point me in the right direction, before my brain completely melts? Thanks, in anticipation.