Changes

Another example:<br/>

here we use a library to generate barcodes [http://www.terryburton.co.uk/barcodewriter (see here)] .

\startluacode

function epstopdf(epsin,pdfout)

temp = io.open(psfile,'w')

temp:write(tostring(barcode_string),"\n")

temp:flush()

\externalfigure[#1.pdf]%

}

\def\PutBarcode[#1]{%