What is the maximum size of xml column in SQL Server?

table.hovertable {
font-family: verdana,arial,sans-serif;
font-size:11px;
color:#333333;
border-width: 1px;
border-color: #999999;
border-collapse: collapse;
}
table.hovertable th {
background-color:#c3dde0;
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #a9c6c9;
}
table.hovertable tr {
background-color:#d4e3e5;
}
table.hovertable td {
border-width: 1px;
padding: 8px;
border-style: solid;
border-color: #a9c6c9;
}

What are the maximum Bytes per xml column in SQL Server?
SQL Server Supports 2^31-1 Bytes per xml Column.

Max Capacity For SQL Server 2012 SQL Server 2008 R2 SQL Server 2008 SQL Server 2005
Maximum Bytes per xml column in SQL Server 2^31-1 Bytes 2^31-1 Bytes 2^31-1 Bytes 2^31-1 Bytes

http://msdn.microsoft.com/en-us/library/ms143432.aspx