as I had no idea what ELTC's is/was, I didn't look at this topic, and missed the discussion about the CERN and MY COUNTRIE'S PART.

I know now the different OPINIONS/INTERPRETATIONS about the "invention" of the internet - but I still only have a small idea about ELTC's. I guess it is an upgrade voucher for use in the US only (as the 500 miles-vouchers with UA?: those were first also only returnable/changable into ff-miles for overseas members, but UA changed that US-member-"discriminating"-policy about 2-3 years ago).