MINI

C:/xampp/phpMyAdmin/templates/display/export/

files >> C:/xampp/phpMyAdmin/templates/display/export/options_output_format.twig

 <li>
    <label for="filename_template" class="desc">
        {% trans 'File name template:' %}
        {{ show_hint(message) }}
    </label>
    <input type="text" name="filename_template" id="filename_template" value="
        {{- filename_template }}">
    <input type="checkbox" name="remember_template" id="checkbox_remember_template"
        {{- is_checked ? ' checked' }}>
    <label for="checkbox_remember_template">
        {% trans 'use this for future exports' %}
    </label>
</li>