http://tcl.activestate.com/man/tcl8.4/TclCmd/encoding.htm
Examples: The Euro sign is represented in Windows cp1252 as \x80. If you get such strings in, you can see the real Euro sign with
encoding convertfrom cp1252 \x80
Back you go with
encoding convertto cp1252 \u20AC
Which default encoding system is used for communication with the OS (including file I/O), you can find out with
encoding system
Which encodings are delivered with your Tcl version, you can easily see with
encoding names
Tcl syntax help - Arts and crafts of Tcl-Tk programming Category Command