<H1>Filling The ETDN Gap</H1> In light of Sabre's recent decision to pull out of the ETDN business, QuikTix is scooping up Sabre's participating travel agencies as customers for its own electronic ticket-delivery network. QuikTix is offering former Sabre customers free sign-up, allowing them to send ticket orders electronically to 110 QuikTix locations at 32 airports in 26 states, said marketing vice president Libby Spina. QuikTix is also hoping to go global; it is in talks with Thomas Cook currency offices and travel agencies in Europe.