feed_reader/app/webfeeds_settings.xml

<?xml version='1.0' encoding='UTF-8'?>
<settings>
    <selection key="/apps/ControlPanel/WebFeeds/NumberOfItemsInCache" title="Number of items to keep in cache">
        <option title="500" >500</option>
        <option title="2000" >2000</option>
        <option title="5000" >5000</option>
        <option title="no limit" >-1</option>
    </selection>
    <selection key="/apps/ControlPanel/WebFeeds/FeedImageScaling" title="Feed icon size">
        <option title="original" >0</option>
        <option title="scaled" >1</option>
        <option title="general icon" >2</option>
    </selection>
    <!--<boolean key="/apps/ControlPanel/WebFeeds/EnableFeed" title="Show feeds on home screen"></boolean>-->
</settings>