map { 'input': 'A B' || out:nl() || 'C' }
)
</syntaxhighlightpre>
* The following example returns “Command not found” (unless {{Code|xyz}} is a valid command on the system):
<pre lang='xquery'>
'Command not found: ' || $err:description
}
</syntaxhighlightpre>
|}
<code>...process code...</code>
</result>
</syntaxhighlightpre>
|- valign="top"
|'''Errors'''