--- a
+++ b/man/NullLag.Rd
@@ -0,0 +1,15 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/lag.R
+\name{NullLag}
+\alias{NullLag}
+\title{Create a LagEffect object with no lag}
+\usage{
+NullLag()
+}
+\value{
+A LagEffect object for which \code{isNullLag()} is TRUE
+}
+\description{
+Create a LagEffect object with no lag
+}
+