Another option: save that long string to a TXT file and then use ShellExecute API to print it. The file will be printed to the default printer.

DECLARE INTEGER ShellExecute IN shell32;
	INTEGER hWindow, STRING lpOperation,;
	STRING lpFile, STRING lpParameters,;
	STRING lpDirectory, INTEGER nShowCmd

= ShellExecute(0, "print", "c:\temp\myfile.txt", "", "", SW_SHOWMAXIMIZED)