Improve description of partiness modifiers

docs/general/ad-filtering/create-own-filters.md

@@ -738,6 +738,8 @@ Rules with the `$popup` modifier are not supported by AdGuard Content Blocker.
 
 Works the same as the [`$~third-party`](#third-party-modifier) modifier, but only treats the request as first-party if the referrer and origin have exactly the same hostname.
 
+Requests without a referrer are also treated as first-party requests, and the rules with the `$strict-first-party` modifier are applied to such requests.
+
 **Examples**
 
 - domain.com$strict-first-party' — this rule applies only to `domain.com`. For example, a request from `domain.com` to `http://domain.com/icon.ico` is a first-party request. A request from `sub.domain.com` to `http://domain.com/icon.ico` is treated as a third-party one (as opposed to the `$~third-party` modifier).
@@ -752,6 +754,8 @@ You can use a shorter name (alias) instead of using the full modifier name: `$st
 
 Rules with the `$strict-first-party` modifier are supported by AdGuard for Windows, AdGuard for Mac, AdGuard for Android, and AdGuard for Linux with [CoreLibs] v1.16 or later.
 
+Requests without a referrer are matched by rules with `$strict-first-party` in AdGuard for Windows, AdGuard for Mac, and AdGuard for Android with [CoreLibs] v1.18 or later.
+
 :::
 
 #### **`$strict-third-party`** {#strict-third-party-modifier}
@@ -791,20 +795,28 @@ To be considered as such, a third-party request should meet one of the following
 
 **`$third-party`:**
 
-- `||domain.com^$third-party` — this rule applies to all domains, except `domain.com` and its subdomains. An example of a third-party request: `http://example.org/banner.jpg`.
+- `||domain.com^$third-party` — this rule applies to all domains except `domain.com` and its subdomains. The rule is never applied if there is no referrer. An example of a third-party request: `http://example.org/banner.jpg`.
 
-If there is a `$~third-party` modifier, the rule is only applied to the requests that are not from third parties. Which means, they have to be sent from the same domain.
+If there is a `$~third-party` modifier, the rule is only applied to requests that are not from third parties. Which means they have to be sent from the same domain or shouldn't have a referrer at all.
 
 **`$~third-party`:**
 
-- `||domain.com$~third-party` — this rule is applied exclusively to `domain.com`. Example of a non third-party request: `http://domain.com/icon.ico`.
+- `||domain.com$~third-party` — this rule applies only to `domain.com` and its subdomains. Example of a non third-party request: `http://sub.domain.com/icon.ico`.
+
+Requests without a referrer are also treated as non third-party requests and the rules with the `$~third-party` modifier are applied to such requests.
 
 :::note
 
 You may use a shorter name (alias) instead of using the full modifier name: `$3p`.
 
 :::
 
+:::info Compatibility
+
+Requests without a referrer are matched by rules with `$~third-party` in AdGuard for Windows, AdGuard for Mac, and AdGuard for Android with [CoreLibs] v1.18 or later.
+
+:::
+
 #### **`$to`** {#to-modifier}
 
 `$to` limits the rule scope to requests made **to** the specified domains and their subdomains. To add multiple domains to one rule, use the `|` character as a separator.