blue line in the middle of document
I've got this line towards the middle of the document, and I don't know where it comes from...
It's not directly in the middle, and it's even visible after exporting to pdf.
I thought that it's a mark, where the page will be folded (it's an A4 document, with two (A5) pages.. if that makes sense.
But obviously, I can't send it to print like that...
How do I get rid of it ?
Thanks!


