WebSphere MQ on Windows, MaxChannels setting in registry

WebSphere MQ on Windows uses registry for queue manager configuration. I was looking for MaxChannels in my queue manager registry and didn't find a corresponding entry. I have modified the MaxChannels to 10 using WebSphere MQ Explorer, and registry entry appeared automatically.

C:>reg query HKLM\SOFTWARE\IBM\MQSeries\CurrentVersion\Configuration\QueueManager\testQM /s

! REG.EXE VERSION 3.0

HKEY_LOCAL_MACHINE\SOFTWARE\IBM\MQSeries\CurrentVersion\Configuration\QueueManager\testQM
Name REG_SZ testQM
Prefix REG_SZ C:\IBM\WMQ
Directory REG_SZ testQM

HKEY_LOCAL_MACHINE\SOFTWARE\IBM\MQSeries\CurrentVersion\Configuration\QueueManager\testQM\CHANNELS
MaxChannels REG_SZ 10

I guess default values not stored in registry. This should have been better documented in IBM Infocenter.