Encouraged by Vasile's success, I decided to seek advice on this list. :) Say you have a device that indicates an "error" condition by quickly flashing the LED, and emitting a 1Khz sound that pulsates at about 4Hz (on/off). In the "Troubleshooting" section of the manual, I describe the symptoms as 'Quickly flashing LED, "chirping" sound', but a colleague argues that there's nothing "chirping" about the sound. What would be a better word? None of the alternatives suggested by thesaurus.com seem correct to me. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist