Num Pattern in Picture Clause Specification

Even after reading LC Designer help and Picture Clause Specification I am still not clear what would be a proper numeric pattern as per client's request below.

The value should be displayed with all significant digits. i.e. 0.05, 1.5, 5.555.

If they enter 1.95 the form shows the rounded value to the whole number 2. I cannot find out the way to show what is entered like 1.95 in the format 999.999 less insignificant digits. Also, is it possible to show period instead of coma in the patter. I have tried 999V999, but still shows coma.

Any help would be greatly appreciated.

Thanks,