Sheet size lines printing

[Anonymous]

I see the outermost lines on the sheet families, which is great, otherwise, I wouldn't be able to know the size of the sheet.

But, why do they show up when I print to PDF, and how can I make them non-printing? 

Thank you 

[ToanDN · Accepted solution]

You can set the PDF paper to have some margin and print 100%, no offset.  Or, put the outer border under <Invisible> sub category so that they will highlighted when you hover the mouse over the titleblock.  Overhere, I have 4 small crop marks at the corners.