To add code snippet to Xcode show **Utilities** right panel and press `{}` button (*Show the Code Snippet library*) in lower panel.

Then select a code you would like to treat as a snippet, press and hold a left mouse button for a while and drag whole selection to the right panel (if you drag to early you'll probably only deselect text; you can also try dragging from a whitespace instead of the letter).

####Placeholder tokens

If you want to add this nice placeholder in rounded blue rect simply put it between `<#` and `#>` and it will be transformed in both editor and final snippet.