Summary of the rules.
Buy: H>H[1] AND C>C[1] (Based on previous testing with a single time frame on Tradestation the Close part made a difference. A negative close would actually be a reversal day which is typically a sign of weakness)
Sell: L<L[1] AND C<C[1]
Stop Buy: L<L[1]
Stop Sell: H>H[1]
For a multiple time frame, one would need to retain the direction bias as per above for say, a day chart, and then take similar signals base on the same rules for the lower time frame but only the signals in the direction of the day time frame.
Other notes:
As above, and inside day retains the signal or direction of the prior bar.
Feel free, if you are so inclined, to test other indicators on the smaller time frame.