Precision

[w64bit]

I kindly ask you to add these options:

• 6 and 9 digits result precision format in Precision menu list (this is multiple of digit grouping)
• an option to display the results with no trailing zeros, even when precision format is active
  example: a precision of 6 for 12.500000 and trailing active to be displayed as 12.5
• all results which are continuing beyond the precision digits to be displayed with a right arrow at the end
  example: a precision of 3 for 12.5672697351... to be displayed 12.567->