Basic principle support ,resistance and flipping of support n resistance (support becomes resistance ,resistance becomes support).. DRB- Previous Day Range High ( PDH ) and Low ( PDL ) WRB- Previous Week Range High (PWH) and Low (PWL) MRB - Previous Monthly Range High (PMH) and Low (PML) It gives Trending Market Signal for bullish (price breaks PDH range continuous in up direction and make support) and similarly for bearish (price breaks PDL range continuous in down direction and make resistance).. For sideways/Non-trending market stay with in a range not break high and low..(stay away from it).. DRB act as minor support and resistance .. WRB and MRB act as major support and resistance ...