From 511bb63f5f2e5757ff2cd093690c9a9c37a0bc53 Mon Sep 17 00:00:00 2001
From: fantasai <fantasai.bugs@inkedblade.net>
Date: Mon, 17 Dec 2018 15:02:44 -0800
Subject: [PATCH] [css-grid-1] Add a note reminding that implicit lines have
 all line names to aspos section about non-existent lines. #3445

---
 css-grid-1/Overview.bs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/css-grid-1/Overview.bs b/css-grid-1/Overview.bs
index a2c52a2d5b2..739ae20b40b 100644
--- a/css-grid-1/Overview.bs
+++ b/css-grid-1/Overview.bs
@@ -3276,6 +3276,9 @@ With a Grid Container as Containing Block</h3>
 	it is instead treated as specifying ''auto''
 	(instead of creating new <a>implicit grid lines</a>).
 
+	Note: Remember that implicit lines are assumed to have all line names,
+	so a referenced line might exist even though it is not explicitly named.
+
 	If the <a>placement</a> only contains a <a>grid span</a>,
 	replace it with the two ''auto'' lines in that axis.
 	(This happens when both <a>grid-placement properties</a> in an axis contributed a span originally,