value(number) number to play. Value is interpreted as integer.
unit(number) unit identifier [Full list]((../appendix/units.html))
attributes(unsigned number) possible values:
0 or not presentplays integral part of the number (for a number 123 it plays 123)
PREC1plays a number with one decimal place (for a number 123 it plays 12.3)
PREC2plays a number with two decimal places (for a number 123 it plays 1.23)