Moderate-With-Circumstances
Regulative in substance but allows circumstantial adiaphora (time, place, posture) governed by light of nature and Christian prudence (WCF I.6, XXI.1).
This is a contested or rejected alternative.
The Westminster baseline on Regulative Principle is Strict-Only-What-Commanded. Personas and schools listed below hold this alternative position instead — either because they argued for it at the Assembly (like the Erastians on polity) or because they represent a receiving tradition that departed from the Standards on this point.
Cruxes on this attribute
The Assembly navigated 2 cruxes that bear directly on Regulative Principle.
Other positions on Regulative Principle
Strict-Only-What-Commanded WCF
Only what is instituted by God in Scripture (by precept, approved example, or good and necessary consequence) may be done in worship (WCF XXI.1).
Normative-Whatever-Not-Forbidden
Whatever is not forbidden may be done in worship — the Anglican-Lutheran principle the Standards reject.