CGMiner config file syntaxa

I posted this in the cgminer thread, and was summarily ignored. It's 83 pages long anyhow, time to start new threads!

I am trying to use the config file, but ran into 3 config switches which refuse to work.

All of the following auto-fan/gpu permutations fail:

Code:

"auto-fan" : "true",

Code:

"auto-fan" : "1",

Code:

"auto-fan" : "",

Trying to select for a single device is troublesome:

Code:

"device" : "1",

Results in GPU 0 and 2 being disabled.

Code:

"device" : "2",

Results in GPU 0 and 1 being disabled.

Code:

"device" : "2",
"device" : "1",

Results in GPU 0 and 1 being disabled.

Can you clarify the syntax for these commands?

Also, can you query for what the automatically detected values for vectors and worksize?
Thanks!