For example, the HAL PROCESSING OP instruction is normally used in a looping sequence on the input thread (thread 1 by convention), such as the procedure: [1039] HAL_PROCESSING_OP [1040] YIELD_OP [1041] JUMP OP(LOGICAL_OFFSET(0)) [1042] The HAL function can use this call to look for any user input, such as for example, the user selection of a button corresponding to a hot spot [1043] Having now de