Why regimes are separated
The same indicator means different things in a trend and in a range. RSI 30 in a range is a reason to expect a bounce. RSI 30 in a strong decline is merely confirmation of the decline, and buying it usually ends badly.
So the core determines the regime first and only then decides which factors to consider at all.
What happens in a range
Reversal signals off the edges are sought: RSI near 30 and 70, the stochastic in its zones, touches of the Bollinger bands, support and resistance levels, stretch away from VWAP, CCI beyond ±100, very short oversold readings on RSI(2).
What happens in a trend
Entries with the trend are sought: a MACD cross, a pullback to EMA21 with the move resuming, ADX above 25 with directional DI, a Donchian channel breakout, an aligned EMA fan 9 > 21 > 50, market structure.
Against the trend only divergence is considered — the single factor allowed to argue with the direction.
The "range only" setting
Restricts work to the range regime. Reasonable if your style is trading off the edges and you do not want trend entries. Expect noticeably fewer signals.