###Function###
Log

###Description###
Calculates the natural logarithm of a number.

###Syntax###
Log ( expression ) 


###Parameters###
@@ParamTable@@
expression
	Any positive number. 
@@End@@

###ReturnValue###
@@ReturnTable@@
Success:	Returns the parameter's natural logarithm.
Failure:	Tends to return -1.#IND for non-positive parameters.
@@End@@


###Remarks###
@error is always 0

###Related###
Exp


###Example###
@@IncludeExample@@
