Prints to the VFD.
vfd: a variable of the type Ncr4X20Vfd.
data: the data to print (char, byte, int, long, or string)
BASE (optional): the base in which to print numbers: BIN for binary (base 2), DEC for decimal (base 10), OCT for octal (base 8), HEX for hexadecimal (base 16).
See HelloWorld example.