flcdsim is a graphical simulator for the Scott Edwards Electonics, Inc. Integrated Serial LCD Module, ILM-216.  It simulates all aspects of the 2-line, 16-character LCD display including the 4 buttons that are supported by the module, the piezo buzzer, and the communications delay induced by the slow serial interface.  flcdsim runs another program with the stdin/stdout/stderr files redirected to flcdsim, allowing you to develop applications that communicate with an ILM-216 without an ILM-216 on your system, or just to test the interface without disturbing the LCD that is already being used.