diff --git a/00.md b/00.md
index f37a742..00b11e3 100644
--- a/00.md
+++ b/00.md
@@ -14,8 +14,11 @@ A public event (with no access control), such as of `kind:1`,
 must be published or updated with a `full_event` tag pointing to a
 `kind:40042` event address.
 
-It may include one of the following tags holding a preview of the full event content:
-`summary`, `image`, `audio`, `video`. The first holds a text excerpt while the others an URL.
+It's data should be set to a preview version of the full event. For example, a `kind:1063` of an image file
+could set the `url` tag to a blurred version of the image, while a `kind:1` event should
+set `.content` to a text excerpt of the full text such as "This is the first sentence of the full text. This text is trimmed...".
+
+This guarantees backwards compatibility for clients not aware of this NIP.
 
 Example:
 
@@ -24,7 +27,7 @@ Example:
   "kind": 1063,
   "tags": [
     ["full_event", "40042:<32-bytes lowercase hex of a pubkey>:abc", "<recommended relay URL, optional>"],
-    ["image", "<string with preview URI>"],
+    ["url", "<string with PREVIEW url>"],
     ["dim", "800x600"]
   ],
   "content": "",
@@ -74,4 +77,4 @@ a `#A` filter key set to the client's user pubkey.
 If the user has rights to access the full event, the relay will send it
 after the NIP-42 authentication flow.
 
-For example: `{ kinds: [40042], authors: ["abc"], #d: ["xyz"], #A: ["<client's user pubkey>"], limit: 1 }`
+For example: `{ "kinds": [40042], "authors": ["abc"], #d: ["xyz"], "#A": ["<client's user pubkey>"], "limit": 1 }`