CUDA documentation

I have been trying to learn CUDA by analyzing a few examples in CUDA’s SDK.
I found functions like CUT_DEVICE_INIT(), cutGetCmdLineArgumenti, etc.
However I was unable to found any information about it in CUDA Programming Guide 1.1. Where can I find description of all functions available in CUDA?

CUT_* functions are from the CUDA toolkit. I am not sure there is any documentation about them, but you can just read the source. It consists mostly of macro’s that perform often-used tasks.

There is a cutil_readme.txt in the common subdirectory