> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes. # layoutEvent$ > Observable that emits whenever the call layout changes. ```ts get layoutEvent$(): Observable ``` ## **Examples** ```ts call.layoutEvent$.subscribe((layoutEvent) => { console.log('layoutEvent:', layoutEvent); }); ``` > Observable that emits whenever the call layout changes.