<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<playground version='6.0' target-platform='osx' display-mode='rendered'>
    <pages>
        <page name='Observables'/>
        <page name='PublishSubject'/>
        <page name='BehaviorSubject'/>
        <page name='Variable'/>
        <page name='Challenge - Subjects'/>
    </pages>
</playground>