--- a
+++ b/man/isNullLag-methods.Rd
@@ -0,0 +1,22 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/lag.R
+\docType{methods}
+\name{isNullLag}
+\alias{isNullLag}
+\alias{isNullLag,LagEffect-method}
+\title{Function to check whether Lag is a null lag}
+\usage{
+isNullLag(Lag)
+
+\S4method{isNullLag}{LagEffect}(Lag)
+}
+\arguments{
+\item{Lag}{A LagEffect object}
+}
+\value{
+TRUE if null lag, FALSE otherwise
+}
+\description{
+This checks whether the Lag.T slot is 0
+}
+