 
      
      file::writebyte()Write a single byte to the opened file (binary mode)
file::writebyte(value, position)
value (number)  — Byte to be writtenposition (number)  — Position where value will be written
boolean — Always returns true
import fileio
 
f = file("data.bin", file_binary + file_write)
 
f.writebyte(0x0a, 0x00)   ' Write 1 byte to the position 0
f.writebyte(0x0f, 0x01)   ' Write 1 byte to the position 1
 
f.close()