From c1360c4f0b111143747bad6226df6f00499f5cfe Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Sat, 4 May 2024 23:34:37 -0300
Subject: [PATCH] nip54: add normalization rules.

---
 54.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/54.md b/54.md
index 7870330..c481eb6 100644
--- a/54.md
+++ b/54.md
@@ -21,7 +21,12 @@ Articles are identified by lowercase, normalized ascii `d` tags.
 }
 ```
 
-[INSERT NORMALIZATION EXAMPLES]
+### `d` tag normalization rules
+
+- Any non-letter character MUST be converted to a `-`.
+- All letters MUST be converted to lowercase.
+
+### Content rules
 
 The content should be Markdown, following the same rules as of [NIP-23](23.md), although it takes some extra (optional) metadata tags: