PRINT SPACE OUTFILE='filename' n_lines.
PRINT SPACE prints one or more blank lines to an output file.
The OUTFILE subcommand is optional. It may be used to direct output to a file specified by file name as a string or file handle (see FILE HANDLE). If OUTFILE is not specified then output will be directed to the listing file.
n_lines is also optional. If present, it is an expression (see Expressions) specifying the number of blank lines to be printed. The expression must evaluate to a nonnegative value.