tachiyomi/app/src/main/res/values/arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="viewers">
        <item>@string/left_to_right_viewer</item>
        <item>@string/right_to_left_viewer</item>
        <item>@string/vertical_viewer</item>
        <item>@string/webtoon_viewer</item>
    </string-array>

    <string-array name="viewers_values">
        <item>1</item>
        <item>2</item>
        <item>3</item>
        <item>4</item>
    </string-array>

    <string-array name="viewers_selector">
        <item>@string/default_viewer</item>
        <item>@string/left_to_right_viewer</item>
        <item>@string/right_to_left_viewer</item>
        <item>@string/vertical_viewer</item>
        <item>@string/webtoon_viewer</item>
    </string-array>

    <string-array name="download_slots">
        <item>1</item>
        <item>2</item>
        <item>3</item>
    </string-array>

    <string-array name="reader_themes">
        <item>@string/white_theme</item>
        <item>@string/black_theme</item>
    </string-array>

    <string-array name="reader_themes_values">
        <item>0</item>
        <item>1</item>
    </string-array>

</resources>