Footnotes:
1.
Use a leading dash (-) to input a negative value and a period (.)
to separate the integer and fraction amounts. I process only
the first six characters of the fraction part.
2.
The "User-1" and "User-2" fields need you to
specify characters to use for their "digit" values.
The first character should be the equivalent of zero, the second
is the base value, and each succeeding character is the next higher
power of the base.
3.
The dash (-) and period (.) are valid
ASCII
characters, so they can not be used for negative and fractional
input.
4.
Roman Numeral lower-case letters have values 1000 times their
upper-case versions. For Roman Numeral fraction values,
the first character is the denominator and the rest give the
value of the numerator.