The Bar Code FAQ
[http://www.azalea.com/FAQ.html]
has valuable information, but is available only
in [PDF].
BarCode1 FAQ
[http://www.adams1.com/pub/russadam/faq.html]
is an entirely different document.
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XXXX
[http://www.narrabri.atnf.csiro.au/software_dev/archiving_station/archiver.html]
is an archival application written in Tcl.
One CueCat decoder
[http://www.logorrhea.com/cuecat/]
is written in Tcl.
"A fully automated high-throughput HPLC-MS system ..."
is an academic article which describes a Tcl-coded
biochemical system which employs barcodes.
BarCode DataBase
[http://sourceforge.net/projects/bcdb]
is coded in [Perl].