• PageHeaderLines is an option for notebooks that determines if a horizontal line is inserted at the top of each page when the notebook is printed.
• PageHeaderLines is specified as a list of two elements, one each for the left and right pages. With the default setting PageHeaderLines {True,True}, both left and right pages are printed with a horizontal line on top, below the page header.
{True,True}, both left and right pages are printed with a horizontal line on top, below the page header.