Hello all, I wanted to start a thread for filters, basically the narrowing of down of a trading system from a core amount of trades. An example would be a speed filter like z= absvalue(c-c); if [conditions] and z > z then....... I think this was in an old stocks and commodities mag. Anyway, there it is, I will add more if people are interested in the thread. My hope is that we can build our vocabulary of filters.