Deciphering!?

[brispuss]

Trying to interpret what (pre)compressors were used and their corresponding options for some game compressions.

Here is a random sample -

srep:m3f+lzma:a1:mfbt4:d256m:fb273:mc1000000000:lc8

The srep part is srep a pre-processor with the option -m3f used. Right?

The lzma part however is not clear as to what actual compressor program was used. Some of the options (after the lzma part) do not seem to correspond to known options for some compressors.

Some of the options suggest the compressor program used was lolz, but remaining options do not appear to be available in lolz. Other options suggest the compressor program used was dlz, but again the remaining options do not seem to be available on dlz.

So can someone please confirm what compressor program(s) were used for the "lzma" part!?