RetroArch/android/phoenix/res/xml/prefs.xml

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

    <PreferenceScreen android:title="System Config" >
        <PreferenceCategory android:title="General" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="savestate_auto_save"
                android:summary="Automatically saves and restores game state"
                android:title="Auto save state" />
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="rewind_enable"
                android:summary="Allow rewinding a game in real-time (WARNING - CPU intensive)."
                android:title="Rewind" />
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Video Config" >
        <PreferenceCategory android:title="General" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_smooth"
                android:summary="Applies bilinear filter, smooths out edges"
                android:title="Bilinear filter" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_vsync"
                android:summary="When set to enabled, prevents screen tearing"
                android:title="VSync" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="video_allow_rotate"
                android:summary="Will auto-rotate the screen for vertically oriented games."
                android:title="Auto-rotate" />

            <ListPreference
                android:entries="@array/aspect_ratios"
                android:entryValues="@array/aspect_values"
                android:key="video_aspect_ratio"
                android:summary="Aspect ratio to enforce"
                android:title="Aspect ratio" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Overlay" >
            <CheckBoxPreference android:title="Enable"
                android:key="input_overlay_enable"
                android:defaultValue="false" />
            <Preference
                android:summary="Sets touchscreen overlay config"
                android:title="Input overlay" >
                <intent
                    android:targetClass="org.retroarch.browser.OverlayActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>
        </PreferenceCategory>
        <PreferenceCategory android:title="Shaders" >
            <CheckBoxPreference android:title="Enable"
                android:key="video_shader_enable"
                android:defaultValue="false" />
            <Preference
                android:summary="Sets GLES2 style XML shader"
                android:title="XML shader" >
                <intent
                    android:targetClass="org.retroarch.browser.ShaderActivity"
                    android:targetPackage="org.retroarch" />
            </Preference>
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Audio Config" >
        <PreferenceCategory android:title="General" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_enable"
                android:summary="Enable audio"
                android:title="Audio enable" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_rate_control"
                android:summary="Enable dynamic rate control"
                android:title="Dynamic Rate Control" />
        </PreferenceCategory>
    </PreferenceScreen>
</PreferenceScreen>