The Worksheet Properties View tab controls hiding or showing worksheet elements: row and column headers, grid lines, etc.
The Page Break Preview Lines check box turns on a solid blue line to indicate the print area, and a dashed blue line to indicate vertical and horizontal page breaks. Similar to what one sees with Print Preview, but without repeat of header information.
Modify the appearance of the column label rows by clicking the Edit Column Label Rows button to open the Column Label Rows dialog box.
In the Column Label Rows dialog box, add, delete and reorder column label rows. Control the display of the column label rows and specify their heights.