SabreTalk is a discontinued dialect of PL/I for the S/360 IBM mainframes running the TPF platform. SabreTalk was developed jointly by American Airlines, Eastern Air Lines and IBM. SabreTalk is known as PL/TPF (Programming Language for TPF). In 1973, Eastern Air Lines' computing division was selling the SabreTalk compiler for US$95,000. SabreTalk programs still run in the British Airways Flight Operations system (FICO) under ALCS, using a commercially available automatic converter to translate SabreTalk programs to C programs. Both the Reservations and Operations Support System (OSS) of Delta Air Lines were developed using both SabreTalk and IBM 360 Assembler. Although development is currently restricted to C++, the majority of Delta's programming platform remained in Sabretalk until recently in the 2010s. Because of the availability of translators from SabreTalk to C and discontinued support by the original developers, several companies are beginning the move away from SabreTalk to purely C-based programs. Code Sample: