MAX: Maximum function

syntax: MAX(x, y) or
MAX(n, x1, x2, ...xn) or
MAX(<filename>)

returns the maximum of the two values: x, y or a range of numbers specified by n and starts from x1 to xn or a single argument specifying the name of the plain text file containing the series of numbers with each element in the file seperated by spaces or starting at a new line.