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        Sun, 28 Aug 2016 13:54:28 -0700 (PDT)
Date: Sun, 28 Aug 2016 22:54:24 +0200
From: "Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] PCB netlist bug, missing connection
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> Not a bug.  Trailing lower case letters are considered gate letters
> (slots), and ignored by PCB.  For example, you might have a quad NAND
> gate with refdes U1a, U1b, U1c, and U1d.
> 
> So your "Cout" looks like "C" to PCB.

It is connected in gschem but not in pcb and there are neither a warning nor an error message.

Since it block lower case letter from use in net name it does not seems like a very good choice. Some kind of escape sequence for special meaning would probably be a better choice although to keep it out of the refdes would be the best unless there are to many other disadvantages.

Now I know it and it's and then it is not a big problem. Neither do I expect anyone to change it now but for the long run it might be a good idea.