The Page Properties dialog box enables you to change properties of a   selected page(s).

The dialog box contains three sections:

Info. In this section, you see information about your page(s). In this part you can see:

Alias section provides place to insert an alias name for a page(s). Alias for a page is created to let you assign long names (with special symbols like 'space' enabled) to your page. This is used in NavBars and Links creation.

Header/Footer. In this section, you can define or change a header and a footer for a selected page(s). There are two combo boxes: Header and Footer.