Fix cf-flatten tag name and create placeholders for new one

Author: RebeccaTamachiro

src/content/docs/dns/cname-flattening/set-up-cname-flattening.mdx

@@ -47,7 +47,7 @@ Make a `PATCH` request to the [Update DNS Settings](/api/resources/dns/subresour
 
 Paid zones also have the option of flattening specific `CNAME` records.
 
-If you use this option, a special [tag](/dns/manage-dns-records/reference/record-attributes/) `cf-flatten` will be added to the respective flattened `CNAME` records in your zone file, allowing you to [export and import records](/dns/manage-dns-records/how-to/import-and-export/) without losing this configuration.
+If you use this option, a special [tag](/dns/manage-dns-records/reference/record-attributes/) `cf-flatten-cname` will be added to the respective flattened `CNAME` records in your zone file, allowing you to [export and import records](/dns/manage-dns-records/how-to/import-and-export/) without losing this configuration.
 
 <Tabs syncKey="dashPlusAPI"> <TabItem label="Dashboard">
 

src/content/docs/dns/manage-dns-records/how-to/import-and-export.mdx

@@ -90,9 +90,10 @@ f.example.com.  60  IN  A   1.1.1.1 ; this is the comment cf_tags=tag1:value1,ta
 g.example.com.  60  IN  A   1.1.1.1
 ```
 
-### cf-flatten tag
+### Reserved cf- tags
 
-If you are on a paid zone and want to use [Per-record CNAME flattening](/dns/cname-flattening/set-up-cname-flattening/#per-record), use the tag `cf-flatten` next to each flattened CNAME record in your zone file. On export, this tag is automatically added to reflect the record configuration that you have on your zone.
+- **cf-proxied**:
+- **cf-flatten-cname**: If you are on a paid zone and want to use [Per-record CNAME flattening](/dns/cname-flattening/set-up-cname-flattening/#per-record), use the tag `cf-flatten-cname` next to each flattened CNAME record in your zone file. On export, this tag is automatically added to reflect the record configuration that you have on your zone.
 
 ## DNS zone file directives
 

src/content/docs/dns/manage-dns-records/reference/record-attributes.mdx

@@ -51,7 +51,7 @@ Create or edit record attributes just like any other aspect of DNS records, whet
 
 You can also add or edit attributes by [exporting and re-importing](/dns/manage-dns-records/how-to/import-and-export/#dns-record-attributes) your records, or using the [Batch record changes API](/dns/manage-dns-records/how-to/batch-record-changes/#use-the-api).
 
-When exporting and importing, a special tag `cf-flatten` allows you to control [CNAME flattening for individual records](/dns/cname-flattening/set-up-cname-flattening/#per-record). On export, this tag is automatically added to reflect the record configuration you have on your zone.
+When exporting and importing, special tags starting by `cf-` allow you to control specific Cloudflare configurations. On export, these tags are automatically added to reflect the current configuration for each record on your zone. Refer to [reserved cf- tags](/dns/manage-dns-records/how-to/import-and-export/#reserved-cf--tags) for details.
 
 ***