RetroArch/android/phoenix/res/xml/main_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    android:title="@string/mainmenu_title" >

    <!-- TV Mode -->
    <Preference
        android:key="retroTVMode"
        android:title="@string/tv_mode"/>

    <!-- Load Core -->
    <Preference
        android:key="loadCorePref"
        android:title="@string/load_core"/>

    <!-- Load Game -->
    <Preference
        android:key="loadRomPref"
        android:title="@string/load_game"/>

    <!-- Load Game (History) -->
    <Preference
        android:key="loadRomHistoryPref"
        android:title="@string/load_game_history"/>

    <!-- Settings -->
    <Preference android:title="@string/settings">
       <intent
          android:targetClass="com.retroarch.browser.preferences.PreferenceActivity"
          android:targetPackage="com.retroarch" />
    </Preference>

    <!-- About -->
    <PreferenceScreen android:title="@string/about">
        <PreferenceCategory android:title="@string/websites">
           <Preference android:title="@string/retro_website"
              android:summary="@string/retro_website_desc">
                <intent
                    android:action="android.intent.action.VIEW"
                    android:data="http://www.libretro.com" />
            </Preference>
        </PreferenceCategory>
        <PreferenceCategory android:title="@string/manuals">
           <Preference android:title="@string/retroarch_guide"
              android:summary="@string/retroarch_guide_desc">
                <intent
                    android:action="android.intent.action.VIEW"
                    android:data="http://www.libretro.com/documents/retroarch-manual.pdf" />
            </Preference>
           <Preference android:title="@string/cores_guide"
              android:summary="@string/cores_guide_desc">
                <intent
                    android:action="android.intent.action.VIEW"
                    android:data="http://www.libretro.com/documents/retroarch-cores-manual.pdf" />
            </Preference>
        </PreferenceCategory>
        <PreferenceCategory android:title="@string/development">
           <Preference android:title="@string/overlay_guide"
              android:summary="@string/overlay_guide_desc">
                <intent
                    android:action="android.intent.action.VIEW"
                    android:data="http://www.libretro.com/documents/overlay.pdf" />
            </Preference>
        </PreferenceCategory>
    </PreferenceScreen>
</PreferenceScreen>