property Page.Visible as Boolean
Shows or hides the page.

TypeDescription
Boolean A boolean expression that indicates whether the page is visible or hidden. 

Use the Visible property to hide a page at runtime. Use the Position property to change the page's position.  

Use the Template editor to hide a page at design time like in the following sample ( X-Language ): 

Pages
{
    Add("Tab 2", "Tab2", 2)
    {
        Visible = False
    }
}