There has always been a need to have a standard reference material in the area of Documentary credit. This has become all the more necessary, with the rules governing letter of credit modified from 1st of July 2007. ?instantLC` is a user friendly software, which provides information on Documentary credit (letter of credit) in the form of a decision tree. The material provided is easy to understand and can facilitate even novices to the subject to get a good grip on the subject. Apart from covering the UCP 600 and ISBP 681, this software also takes care of other related areas like Incoterms, DOCDEX and the SWIFT format. Further, the care and caution to be taken by the exporters, importers and bankers is covered in detail. Case Studies covering day to day practical problems is also provided.