h264.infi need explanation

[advent2]

Hello.
I would greatly appreciate any explanation on how to use h264.ini
Could not find anything at all.. only few mentions that that allows to control bitrate ..
And one example file:

Transform8x8Flag = 2
Profile = 100
Level = 41
BitRate = 10000000
EntropyCodingMode = 0
IntraPicInitQP = 28
InterPicInitQP = 28
QpOffsetForB = 0
MinQpI = 10
MinQpP = 10
MinQpB = 10
MaxQpI = 35
MaxQpP = 51
MaxQpB = 51
MinBitrate = 0
MaxBitrate = 0
SarWidth = 0
SarHeight = 0
AspectRatioIdc = 1
VideoFmtAndVspFlag = 81
VideoFullRangeFlag = 1
TimingInfoPresentFlag = 0
RateControlEnable = 2
ScalingMatrices = 0
pScalingMatrixAddr[0] = 0
pScalingMatrixAddr[1] = 0
pScalingMatrixAddr[2] = 0
pScalingMatrixAddr[3] = 0
pScalingMatrixAddr[4] = 0
pScalingMatrixAddr[5] = 0


But which settings are for what?
Which bitrate can be safely put on mark3 with fast lexar cards?
ANy place to read about this?

Thanks a lot in advance