Go to the first , previous , next , last section, table of contents . Blank lines are allowed and ignored. There should be no blank space before the semi-colon.
Variable names are case sensitive.
Note that the name IFN , in capital letters, is reserved by the program and should not be used as parameter or variable name. The equal sign is needed. The right-hand side expression can be a valid C mathematical expression including already defined variables and ANSI C mathematical functions. Additional functions, called special functions, can be used, which take variable names, constant values or expressions as parameters. Finally, there should be no space before the terminating semi-colon.