TF10130: '...' is a reserved name and may not be included in a path.

I was just testing some of Lizard when I got this error:
TF10130: 'Con' is a reserved name and may not be included in a path.
from this line:
string serverItem = workspace1.TryGetServerItemForLocalItem(localItem);

Where localItem = "c:\...\Con"

Googling the error I found that other people had found that Com1 is reserved, but there is no obvious list of reserved names. MS documentation on TF error messages isn't much use either (http://msdn.microsoft.com/en-us/library/aa337645(VS.80).aspx).

Anyone know anything more about reserved names?