Scilab / C question

Hello everyone, first post! I've been out of the coding game for a LONG time and I was wondering if someone here might know the answer to this question....

I'm working on back testing a trading algo using scilab which looks to be C based (has a lot of C based operations at a minimum). I don't know how to read this FOR loop, could you please explain it to me?

cprice is a single column x 10 row filled with double values

Code:

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ma = 20;
for k = size(cprice,1):-1:ma
    M(k,1)=mean(cprice(k-ma+1:k));
    V(k,1)=sqrt(variance(cprice(k-ma+1:k)));
end

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Thanks for any help you might be able to provide

How about Scilab Tutorials / Documentation / support & services / Home - Scilab WebSite

Yeah, thanks. I was looking for the answer in the wrong place.