Mentioned "preventing autoplay" functionality in "No large media elements" section.

Per-site-switches.md

@@ -15,6 +15,7 @@ Changes to the state of per-site switches are temporary until you make them perm
 
 - [No popups](#no-popups)
 - [No large media elements](#no-large-media-elements)
+   - [No autoplay](#no-autoplay)
 - [No cosmetic filtering](#no-cosmetic-filtering)
 - [No remote fonts](#no-remote-fonts)
 - [No scripting](#no-scripting)
@@ -77,6 +78,18 @@ Examples of usefulness (let's say you just stumbled onto these pages not knowing
 
 If the media elements do not have a `Content-Length` header present, then this switch will fail to block the said media elements by size.
 
+#### No autoplay:
+
+Starting with [1.60.1b2](https://github.com/gorhill/uBlock/commit/73ce4e6bcf) Blocking large media elements also prevents autoplay, regardless of size.
+
+When the "No large media elements" per-site switch is toggled on, it will also act to prevent autoplay of video/audio media, regardless of their size. This also works for xhr-based media streaming.
+
+If blocking by size is not desirable while blocking autoplay is desired, one can toggle on "No large media elements" switch while setting "Block media elements larger than ..." to a very high value.
+
+Related issues:  
+- [Prevent videos from playing automatically](https://github.com/uBlockOrigin/uBlock-issues/issues/3394)  
+- https://github.com/uBlockOrigin/uAssets/discussions/25007
+
 ***
 
 ## No cosmetic filtering