Undocumented packages

The more I use canJs the more I love it, it's awesome.

Browsing the code, I found a couple packages which I'm not sure how do they work since there are no documentation about that (however they seem to solve a couple requirements I have for my current project).

The packages I'm talking about are:

Any ideas regarding whther they are safe to use? nad how do they work?

Thanks in advance.

Ricardo Obregón
YiiFramework developer, UX consultant