To force embed police when viewing pub on apple ibooks

com.apple.ibooks.display-options.xml

<?xml version="1.0" encoding="UTF-8"?>
<display_options>
	<!-- Supported values for platform name: "*", "iphone", "ipad"; "iphone" applies to ipod touch as well; note all-lowercase -->
	<platform name="*">
		<!-- allowed values for "fixed-layout" are either "true" or "false" (with "false" as the default when unspecified) -->
		<option name="fixed-layout">false</option>
		<!-- allowed values for "open-to-spread" are either "true" or "false" (with "false" as the default when unspecified) -->
		<option name="open-to-spread">false</option>
		<option name="specified-fonts">true</option>
	</platform>
	<platform name="iphone">
		<!-- allowed values for "orientation-lock" are "portrait-only", "landscape-only", or "none" (with "none" as default when unspecified) -->
		<option name="orientation-lock">none</option>
	</platform>
</display_options>