Add relay hints, replaceable events, and clarification about content to NIP 32

32.md

@@ -6,7 +6,7 @@ Labeling
 
 `draft` `optional` `author:staab` `author:gruruya` `author:s3x-jay`
 
-A label is a `kind 1985` note that is used to label other entities. This supports a number of use cases:
+A label is a `kind 1985` (regular) event or `kind 32144` (replaceable) event that is used to label other entities. This supports a number of use cases:
 
 - Distributed moderation and content recommendations
 - Reviews and ratings
@@ -22,7 +22,12 @@ Label Target
 
 The label event MUST include one or more tags representing the object or objects being
 labeled: `e`, `p`, `r`, or `t` tags. This allows for labeling of events, people, relays,
-or topics respectively.
+or topics respectively. As with NIP-01, a relay hint SHOULD be included when using `e` and
+`p` tags.
+
+Any number of targets may be included when using a kind `1985` non-replaceable event. If kind
+`32144` is preferred, the event MUST have a single target tag, and its value MUST also be the
+value of the `d` tag.
 
 Label Tag
 ----
@@ -51,6 +56,12 @@ absolute, granular scale that can be represented in any way (5 stars, color scal
 
 The label event MAY include a `confidence` tag with a value of 0 to 1. This indicates the certainty which the author has about their rating.
 
+Content
+-------
+
+`l` tags should be short, meaningful strings. Longer discussions, such as for a review, or an
+explanation of why something was labeled the way it was should go in the event's `content` field.
+
 Example events
 --------------
 
@@ -64,7 +75,7 @@ cases.
   "tags": [
     ["L", "report"],
     ["l", "nudity", "report"],
-    ["e", <id>]
+    ["e", <id>, <relay_url>]
   ],
   "content": "",
   ...
@@ -78,8 +89,8 @@ namespaces may be used at the same time.
 {
   "kind": 1985,
   "tags": [
-    ["e", <id>],
-    ["p", <id>],
+    ["e", <id>, <relay_url>],
+    ["p", <id>, <relay_url>],
     ["t", "chickens"],
     ["L", "#t"]
     ["L", "ugc"]
@@ -103,8 +114,8 @@ A suggestion that multiple pubkeys be associated with the `permies` topic.
   "tags": [
     ["L", "#t"],
     ["l", "permies", "#t"],
-    ["p", <pubkey1>],
-    ["p", <pubkey2>]
+    ["p", <pubkey1>, <relay_url>],
+    ["p", <pubkey2>, <relay_url>]
   ],
   "content": "",
   ...
@@ -156,8 +167,8 @@ this spec provides for overlaying structured metadata on top of nostr.
   "tags": [
     ["L", "my-lightning-nomenclature"],
     ["l", "channel", "my-lightning-nomenclature"],
-    ["p", <pubkey1>],
-    ["p", <pubkey2>]
+    ["p", <pubkey1>, <relay_url>],
+    ["p", <pubkey2>, <relay_url>]
   ],
   "content": "<channel_id>",
   ...