in normal conditions we can detect reversal in order flow.
two major reversals are unfinished auction and retail stoploss flush.
some times market react very strongly without any notice in OFA.
this is limitation of OFA.but there is way for it.
TPO and volume profiles gives some important level where markets react violently.
afte studying OFA over a year, i developed a system by attending many trading rooms and combined together for more profitable system.
key important is OFA ,TPO volume profile and multiple OFA charts reduce our risk.
no lagging indicators used. once you master this you never see any indicator