iPad ebook options

Supposedly by adding the file <com.apple.ibooks.display-options.xml> to the META-INFO directory, and modifying the options for spread, portrait or landscape, one can indicate those preferences to the iBooks. So far, not.

I have an ebook I wish to show in landscape mode. It does NOT use a fixed layout. iBooks is obstinate about opening to a two page spread, portrait. I could live with a one page spread, but two pages are just too cramped for the book.

Can anyone suggest how I might achieve a singe page display?

Here is the XML content I have tried. Any variation of the parameters makes no difference to iBooks.

<?xml version="1.0" encoding="UTF-8"?>
<display_options>
<platform name="*">
 <option name="fixed-layout">false</option>
 <option name="specified-fonts">true</option>
</platform>
<platform name="iphone">
 <option name="orientation-lock">landscape-only</option>
</platform>
<platform name="ipad">
 <option name="open-to-spread">false</option>
 <option name="orientation-lock">landscape-only</option>
</platform>
</display_options>



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