Is it possible to comment out a node in an XDocument?

I have following tag.

```
<abc key="test" value="samplevalue"></abc>

```

I don't have to remove the node; I just want it to be there in the XML file in commented format. I can use something like this:

```
$node = $xml.selectSingleNode('//abc')
#$node.OuterXml.Insert(0,"#");
$node.$xml.Save("c:\test.xml")

```

But if one node spreads in two lines like

```
<abc key="test" value="sampleValue">
</abc>

```

then how do I handle this case?