--markov-disable and HCstat file

Hi there,

I've tried to search the forum and I've even made a quick search in the code but I couldn't find the answer to the question: "Why is HCstat file required even when using parameter --markov-disable?". 

I get the general idea of Markov chains and why I need statistics of some corpus there but I kinda don't get the need of the file when I'm disabling the feature. Is there smth like defined charsets or something like that in it?