From a07d523c81cdc859c28f055ae10792d78f65ee96 Mon Sep 17 00:00:00 2001
From: Terence Parr <parrt@antlr.org>
Date: Sun, 29 Jun 2014 09:43:24 -0700
Subject: [PATCH] add comment

---
 tool/src/org/antlr/v4/Tool.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/src/org/antlr/v4/Tool.java b/tool/src/org/antlr/v4/Tool.java
index 3ec4e3395..59d88d30d 100644
--- a/tool/src/org/antlr/v4/Tool.java
+++ b/tool/src/org/antlr/v4/Tool.java
@@ -122,7 +122,7 @@ public class Tool {
 
 	// fields set by option manager
 
-	public File inputDirectory;
+	public File inputDirectory; // used by mvn plugin but not set by tool itself.
 	public String outputDirectory;
 	public String libDirectory;
 	public boolean generate_ATN_dot = false;