the advent of word-processing and the decline of typewriting meant that any number of copies of a document could be printed on demand, and the decline of carbon paper, which had already been partially superseded by photocopying and carbonless copy paper, became irrevocable. a few specialist or remnant uses remain. examples of these are receipts at point of sale (though they have mostly been relegated to being backups for when electronic pos devices fail) or for on-the-spot fine notices, duplicate checks, and some money orders (though the united states postal service has recently converted to an electronic format), and tracking slips for various expedited mail services requiring multiple copies. in india, form-filling is on a sufficient scale that carbon paper is still widely used. as of 2013, in canada only one eight-person company still manufactures carbon paper, in the united kingdom one company and in the united states only two small companies.