LEFT-HAND BUTTON
  1. a suppressor-type button. The nearlyfound-out is a left-hand button and does not necessarily read on the meter. Suppress, careful of, nearly found out, fail to reveal. They do not cause things to read, they prevent things from reading. All the other buttons cause things to read unnecessarily. Anxious about tends to be a left-hand button. Protest follows on a left-hand button so it tends to be the point where the left and right side tie together. (SH Spec 229, 6301C10)


Technical Dictionary