[sldev] framework documentation pattern

[Ryan Williams (Which)]

Lawson English wrote:
>
> The LLSD class seems to be designed to allow better communication
> between framework objects, among other uses, so any redesigned classes
> should probably use LLSD when talking to each other. This last is only
> the vaguest of intuitions on my part, so feel free to gently correct
> me if I'm wrong about its intended use or the utility of using it when
> rewriting the framework.
Sounds right to me.  :-)  Though of course LLSD is not the hammer for
every nail.

-RYaN