The `sn` attribute is the short name code.The `url` attribute can be any image url than your browser can access, or a [Data URL](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs) representing the file you want to import.
The `sn` attribute is the short name code.The `url` attribute can be any image url than your browser can access, or a [Data URL](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URLs) representing the file you want to import.