#LEF(x,n)# / #MID(x,y,n)# / #RIG(x,n)# - string manipulation

LEF(x,n) = Displays n symbols from the LEFt (latin reading from the beginning of the string)
RIG(x,n) = Displays n symbols from the RIGht (latin reading from the end of the string)
MID(x,y,n) = Displays n symbols from the MIDdle, starting at y from the left

needs to output as numbers when only numbers are used.