initialOrderUpToPointDelta

@set:KSLControl(controlType = ControlType.INTEGER, name = "SDelta", lowerBound = 1.0)
var initialOrderUpToPointDelta: Int(source)

The initial order-up-to gap SDelta = S − r (>= 1), applied at the start of each replication; S is derived as r + SDelta. See initialReorderPoint for the initial-vs-current contract and the rationale for the delta parameterization.