ESC and ENT now operate properly with all parameters in Defaults Table. An overflow does not erase the result of previous calculation. 14.3 Volume can be adjusted. A second operand with a decimal point is always accepted. 14.5 Impair roots of negative numbers are acceptable.
Stopwatch always remembers the final measurement.
Volume now has 6 states that are clearly distingushed. In System prompts to irrelevent key press is Error Beep. Instances of keys lock-up no longer appear.