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 Settings" >

    <PreferenceScreen android:title="System Settings" >
        <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" />
        </PreferenceCategory>
        <PreferenceCategory android:title="Rewinding" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="rewind_enable"
                android:summary="WARNING - very CPU intensive - will decrease ingame performance."
                android:title="Enable" />
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Video Settings" >
        <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:defaultValue="true"
                android:key="input_overlay_enable"
                android:title="Enable" />

            <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 (1st pass)" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_shader_enable"
                android:title="Enable" />

            <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>
        <PreferenceCategory android:title="Shaders (Multi-pass)" >
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_render_to_texture"
                android:summary="Render first pass to texture (FBO). Stretch to screen with second shader."
                android:title="Render to texture" />
            <CheckBoxPreference
                android:defaultValue="false"
                android:key="video_second_pass_shader_enable"
                android:summary="Enable custom shader for use after rendering to FBO."
                android:title="Enable shader #2" />

            <Preference
                android:summary="Sets shader to use for second pass."
                android:title="XML shader (2nd pass)" >
                <intent
                    android:targetClass="org.retroarch.browser.Shader2Activity"
                    android:targetPackage="org.retroarch" />
            </Preference>

            <ListPreference
                android:entries="@array/fbo_scales"
                android:entryValues="@array/fbo_scale_values"
                android:key="video_fbo_scale"
                android:summary="Scale to use when rendering to FBO."
                android:title="FBO scale" />
        </PreferenceCategory>

        <CheckBoxPreference
            android:defaultValue="true"
            android:key="video_second_pass_smooth"
            android:summary="Use bilinear filtering on FBO texture on second pass."
            android:title="Second pass bilinear" />
    </PreferenceScreen>
    <PreferenceScreen android:title="Audio Settings" >
        <PreferenceCategory android:title="Audio" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_enable"
                android:title="Enable" />
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="audio_rate_control"
                android:summary="Enable dynamic rate control (recommended)."
                android:title="Dynamic Rate Control" />
        </PreferenceCategory>
    </PreferenceScreen>
    <PreferenceScreen android:title="Input Settings" >
        <PreferenceCategory android:title="Configuration" >
            <CheckBoxPreference
                android:defaultValue="true"
                android:key="input_autodetect_enable"
                android:summary="This will attempt to preconfigure various gamepads and/or IME apps that you connect."
                android:title="Enable" />
        </PreferenceCategory>
    </PreferenceScreen>

</PreferenceScreen>