From 306a6c2739d897d3326f4299a53836ecf0a613cb Mon Sep 17 00:00:00 2001
From: Cole Miller <57992489+ColeMiller1@users.noreply.github.com>
Date: Sat, 1 Aug 2020 12:38:49 -0400
Subject: [PATCH 1/2] Include .NGRP alias

---
 man/special-symbols.Rd | 1 +
 1 file changed, 1 insertion(+)

diff --git a/man/special-symbols.Rd b/man/special-symbols.Rd
index a22042af1a..30cfedc5fa 100644
--- a/man/special-symbols.Rd
+++ b/man/special-symbols.Rd
@@ -7,6 +7,7 @@
 \alias{.BY}
 \alias{.N}
 \alias{.EACHI}
+\alias{.NGRP}
 \title{ Special symbols }
 \description{
     \code{.SD}, \code{.BY}, \code{.N}, \code{.I}, \code{.GRP}, and \code{.NGRP} are \emph{read-only} symbols for use in \code{j}. \code{.N} can be used in \code{i} as well. See the vignettes and examples here and in \code{\link{data.table}}.

From d5dd50cab81718180c9fa9ed1f9eb6dc4924ad8f Mon Sep 17 00:00:00 2001
From: Cole Miller <57992489+ColeMiller1@users.noreply.github.com>
Date: Sat, 1 Aug 2020 12:49:08 -0400
Subject: [PATCH 2/2] Update NEWS.md

---
 NEWS.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/NEWS.md b/NEWS.md
index 2616e353ec..8eb979197d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -10,6 +10,7 @@
 
 ## NOTES
 
+1. Users can now find more information for `.NGRP` by typing `?.NGRP`, [#4946](https://github.com/Rdatatable/data.table/issues/4649). Thanks to @KyleHaynes for posting the issue.
 
 # data.table [v1.13.0](https://github.com/Rdatatable/data.table/milestone/17?closed=1)  (24 Jul 2020)