Chris, there's no picture that I can see.
However, C. raineri IS a running species, quite widely when happy - but never dangerously - and like most runners really doesn't like pot culture at all except for a very short time. I find they're OK in a good sized trough, with plenty room to move about but in controllable conditions where they won't get overpowered by bigger plants. Having said that, there have been some great plants shown on the Forum, taken at various shows, of running species, so obviously some people have the knack. Mine tend to make for the sides of the pot and leave the middle empty.