You can modify the layout of the site map to show or hide hidden and dependent files. This is useful when you want to emphasize key topics or content, and de‑emphasize less important material.
To hide a file using the site map, you must mark the file as hidden. When you hide a file, its links are also hidden. When you display a file marked as hidden, the icon and its links are visible in the site map, but the names appear in italics.
Right-click (Windows) or Control‑click (Macintosh) in the site map, then select Show/Hide Link.
In the collapsed Files panel (Window > Files), click the options menu in the upper-right corner, then select View > Site Map Options > Show Files Marked As Hidden.
In the collapsed Files panel (Window > Files), click the options menu in the upper-right corner, then select View > Site Map Options > Show/Hide Link.