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From Elxis Official Documentation
On the Destinations page of IOS Reservations you can see a list of all locations. The list is formatted as an hierarchical tree which makes easy to distinguish the parent and the children locations (IOS Reservations supports unlimited number of sub-locations and of any level). A Show/Hide link can shrink this list if it is too large in order to focus visitors attention on his desired destination. This Show/Hide link is being displayed with a Plus/Minus symbol [±] on the root and first level items if they have children elements. For each location you can also see the number of published hotels in that location and the location's thumbnail resized to 30X30 pixels.