You use the XLink xlink:show attribute to indicate how you want the linked-to resource displayed when the link is activated. The xlink:show attribute has five values that are predefined:
embed— Embeds the linked-to resource in the current resource.
new— Opens a new display area, such as a new window, to display the new resource.
none— Does not show the resource. (It can also mean that the application's behavior is not constrained by this markup.)
other— Indicates some setting other than those that are predefined (and usually means that the application should refer to other markup for more information).
replace— Replaces the current resource, in the same window, if there is one.
Even though xlink:show has these predefined ...