diff --git a/24.md b/24.md
index b88d990a..29e39047 100644
--- a/24.md
+++ b/24.md
@@ -36,6 +36,6 @@ These are extra fields not specified in NIP-02 that may be present in the string
 tags
 ====
 
-These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP, they have the following meanings:
+These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP (currently only "r" tags on kind 10002 events have a different meaning), they have the following meaning:
 
   - `r`: a web URL the event is referring to in some way
diff --git a/README.md b/README.md
index 483056dc..5a8fc322 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
 ## Event Kinds
 | kind          | description                | NIP         |
 | ------------- | -------------------------- | ----------- |
-| `0`           | Metadata                   | [1](01.md)  |
+| `0`           | Metadata                   | [1](01.md), [24](24.md)  |
 | `1`           | Short Text Note            | [1](01.md)  |
 | `2`           | Recommend Relay            |             |
 | `3`           | Contacts                   | [2](02.md)  |
@@ -175,7 +175,7 @@ Please update these lists when proposing NIPs introducing new event kinds.
 | `l`               | label, label namespace               | annotations          | [32](32.md)                           |
 | `L`               | label namespace                      | --                   | [32](32.md)                           |
 | `m`               | MIME type                            | --                   | [94](94.md)                           |
-| `r`               | a reference (URL, etc)               | petname              |                                       |
+| `r`               | a reference (URL, etc)               | petname              | [24](24.md)                           |
 | `r`               | relay url                            | marker               | [65](65.md)                           |
 | `t`               | hashtag                              | --                   |                                       |
 | `amount`          | millisatoshis, stringified           | --                   | [57](57.md)                           |