How might I include a line break (or a second line) in the print header of a PDF generated from a Journal window?

[#1]

w = New Window("window", <<Journal, hlb = hlistbox() );
w << Set Print Headers(	"lineone \!n linetwo", "", "Page &pn; of &pc;" );
w << SavePDF ( "C:\Users\blahblah.pdf");

The above script should include a line break in the "left header" so that it has two lines.

Instead the resulting PDF just has a non-printing box character between the two words, like this 

... and if i copy that text into this window it looks right, again:

lineone
linetwo

I am using JMP 14.3 on window 10.

This all seems more like an PDF problem than a JSL problem, but I am still hoping for a solution.