Changes the output displaying the radix point to the specified
character. The radix point is the symbol that separates units
from decimal fractions. For example, in the number 98.6, the
period is the radix point.
You must enclose the radix-char argument within single quotation
marks.
If you do not specify an alternate character, the default is
either the period (.) or the value specified by the logical name
SYS$RADIX_POINT.