define( 'DISALLOW_FILE_EDIT', true );
function iv_disable_editor(){
    return false;
}
add_filter('user_can_richedit', 'iv_disable_editor', 50);
# '' werkt niet, ',' wel
function iv_show_quicktags( $qtInit ) {
    $qtInit['buttons'] = 'strong,em,block';
    return $qtInit;
}
add_filter('quicktags_settings', 'iv_show_quicktags');
function iv_remove_add_media(){
    remove_action( 'media_buttons', 'media_buttons' );
}
add_action('admin_head', 'iv_remove_add_media');
function iv_remove_customizer_options( $wp_customize ) {
    // $wp_customize->remove_section( 'static_front_page' );
    // $wp_customize->remove_section( 'title_tagline' );
    $wp_customize->remove_section( 'colors' );
    $wp_customize->remove_section( 'header_image' );
    $wp_customize->remove_section( 'background_image' );
    // $wp_customize->remove_section( 'nav' );
    // $wp_customize->remove_section( 'themes' );
    $wp_customize->remove_section( 'featured_content' );
    $wp_customize->remove_panel( 'widgets' );
}
add_action( 'customize_register', 'iv_remove_customizer_options', 30);
function iv_custom_menu_page_removing() {
  // remove_menu_page( 'index.php' );                  // Dashboard
  // remove_menu_page( 'edit.php' );                   // Posts
  // remove_menu_page( 'upload.php' );                 // Media
  // remove_menu_page( 'edit.php?post_type=page' );    // Pagina's
  remove_menu_page( 'edit-comments.php' );             // Reacties
  // remove_menu_page( 'themes.php' );                 // Appearance
  // remove_menu_page( 'plugins.php' );                // Plugins
  // remove_menu_page( 'users.php' );                  // Gebruikers
  // remove_menu_page( 'tools.php' );                  // Tools
  // remove_menu_page( 'options-general.php' );        // Instellingen
}
add_action( 'admin_menu', 'iv_custom_menu_page_removing' );
function iv_edit_form_after_title() {
    $hint = '<strong>HINT:</strong> Gebruik SHIFT + ENTER voor een nieuwe regel. ENTER maakt een nieuwe paragraaf.';
    echo '<p>'.$hint.'</p>';
}
add_action( 'edit_form_after_title', 'iv_edit_form_after_title' );
// mu-plugins/load.php
require WPMU_PLUGIN_DIR . '/my-plugin/my-plugin.php';