Document \\.\COM10 faff on Windows.

References:
<http://msdn2.microsoft.com/en-us/library/aa363858.aspx> (CreateFile() docs)
  describes the use of \\.\
<http://msdn2.microsoft.com/en-us/library/aa365247.aspx> ("Naming a File")
  lists the reserved filenames (COM1-COM9, LPT1-LPT9, CON, PRN, AUX, NUL)

git-svn-id: svn://svn.tartarus.org/sgt/putty@7208 cda61777-01e9-0310-a592-d414129be87e

diff --git a/doc/config.but b/doc/config.but
index 63aac0a..2925957 100644 (file)
--- a/doc/config.but
+++ b/doc/config.but
@@ -2975,8 +2975,10 @@ The \q{Serial line to connect to} box allows you to choose which
 serial line you want PuTTY to talk to, if your computer has more
 than one serial port.
 
 serial line you want PuTTY to talk to, if your computer has more
 than one serial port.
 

-On Windows, the first serial line is called \cw{COM1}, and if there
-is a second it is called \cw{COM2}, and so on.
+On Windows, the first serial line is called \i\cw{COM1}, and if there
+is a second it is called \cw{COM2}, and so on. A serial line with
+a name other than \cw{COM1} to \cw{COM9} can be specified by prefixing
+its name with \cw{\\\\.\\} - for instance, \cw{\\\\.\\COM10}.

 
 This configuration setting is also visible on the Session panel,
 where it replaces the \q{Host Name} box (see \k{config-hostname}) if
 
 This configuration setting is also visible on the Session panel,
 where it replaces the \q{Host Name} box (see \k{config-hostname}) if