%S &lt;alias&gt;: Create an alias for the room. Expected room alias of the form '#localname:domain'. Requires permission to add aliases.
%S &lt;alias&gt;: Crëwch enw arall yr ystafell. Mae disgwyl i enw arall yr ystafell i fod ar ffurf '#localname: domain'. Mae angen caniatâd i ychwanegu enwau eraill.