R2SW

I understand how to use the argument precision, but it seems the width argument has no effect, or i miss something ?

isn't width = 0.xxxx ? number of signs after . ?
well i allways use the same values for both xD and it works well...

No only "precision" change the number.

I guess i will use that for "width" :

What does R2SW() do?

Like R2S, R2SW takes a real and return a string, but you can also choice the numbers of signs under the digit.
The rounding of the real number is done like R2S : http://en.wikipedia.org/wiki/Rounding#Common_method

But with R2S you will get a string with 3 numbers under the digit, with R2SW you can choice 0 or more.
But if you choice 0 the real number will be rounded and the string will have one number under the digit, if you don't want any number under the digit you must use SubString(BJ) to remove it.