diff --git a/23.md b/23.md
index 2586ac0c..28bd94f7 100644
--- a/23.md
+++ b/23.md
@@ -6,7 +6,9 @@ Long-form Content
 
 `draft` `optional`
 
-This NIP defines `kind:30023` (an _addressable event_) for long-form text content, generally referred to as "articles" or "blog posts". `kind:30024` has the same structure as `kind:30023` and is used to save long form drafts.
+This NIP defines `kind:30023` (an _addressable event_) for long-form text content, generally referred to as "articles" or "blog posts".
+
+Deprecated: `kind:30024` was used for long-form drafts (self-encrypted nip04, same format as `kind:30023`). The preferred way of doing long-form drafts is to use [NIP-37](37.md) instead.
 
 "Social" clients that deal primarily with `kind:1` notes should not be expected to implement this NIP.
 
diff --git a/37.md b/37.md
index ca0fdfb8..49475be1 100644
--- a/37.md
+++ b/37.md
@@ -31,6 +31,19 @@ A blanked `.content` field signals that the draft has been deleted.
 
 Clients SHOULD publish kind `31234` events to relays listed on kind `10013` below.
 
+## Checkpoints
+`kind:1234` defines checkpoints that belong to a parent `kind:31234` event. These can serve to provide a revision history of a parent event.
+
+```js
+{
+  "kind": 1234,
+  "tags": [
+    ["a", "31234:<pubkey>:<identifier>"]
+  ],
+  "content": nip44Encrypt(JSON.stringify(draft_event)),
+}
+```
+
 ## Relay List for Private Content
 
 Kind `10013` indicates the user's preferred relays to store private events like Draft Wraps. 
diff --git a/51.md b/51.md
index c5359517..90fbc6d9 100644
--- a/51.md
+++ b/51.md
@@ -34,6 +34,7 @@ For example, _mute list_ can contain the public keys of spammers and bad actors
 | Profile badges    | 10008 | [NIP-58](58.md) badges a user has accepted and chosen to display | `"a"` (kind:30009 badge definitions) and `"e"` (kind:8 badge awards), and `"a"` (kind:30008 badge set) |
 | Simple groups     | 10009 | [NIP-29](29.md) groups the user is in                       | `"group"` ([NIP-29](29.md) group id + relay URL + optional group name), `"r"` for each relay in use |
 | Relay feeds       | 10012 | user favorite browsable relays (and relay sets)             | `"relay"` (relay URLs) and `"a"` (kind:30002 relay set)                                             |
+| Draft relays      | 10013 | (nip44-encrypted) [NIP-37](37.md) draft relays              | `"relay"` (relay URL)                                                                               |
 | Interests         | 10015 | topics a user may be interested in and pointers             | `"t"` (hashtags) and `"a"` (kind:30015 interest set)                                                |
 | Media follows     | 10020 | multimedia (photos, short video) follow list                | `"p"` (pubkeys -- with optional relay hint and petname)                                             |
 | Emojis            | 10030 | user preferred emojis and pointers to emoji sets            | `"emoji"` (see [NIP-30](30.md)) and `"a"` (kind:30030 emoji set)                                    |
diff --git a/README.md b/README.md
index 9bdc4c18..42e4885d 100644
--- a/README.md
+++ b/README.md
@@ -156,6 +156,7 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
 | `1018`        | Poll Response                   | [88](88.md)                            |
 | `1021`        | Bid                             | [15](15.md)                            |
 | `1022`        | Bid confirmation                | [15](15.md)                            |
+| `1234`        | Draft Checkpoint                | [37](37.md)                            |
 | `1040`        | OpenTimestamps                  | [03](03.md)                            |
 | `1059`        | Gift Wrap                       | [59](59.md)                            |
 | `1063`        | File Metadata                   | [94](94.md)                            |