What is this strange piece of code in the Wordpress Legenda theme in the theme-option.php file?

Question

PHP

The code is commented, but nevertheless I'm interested in what kind of piece it is
add_action( 'init', 'custom_theme_options', 1 );
/**
* Build the custom settings & update OptionTree.
*/
if (!function_exists('custom_theme_options')) {
function custom_theme_options($return = false) {
global $options_presets;
$options_presets['e-commerce'] = 'eyJtYWluX2xheW91dCI6IndpZGUiLCJ0b190b3AiOlsiMSJdLCJuaWNlX3Njcm9sbCI6WyIxIl0sImZhdmljb25fYmFkZ2UiOlsiMSJdLCJmb290ZXJfZGVtbyI6WyIxIl0sImdvb2dsZV9jb2RlIjoiIiwibWFpbl9jb2xvcl9zY2hlbWUiOiJsaWdodCIsImFjdGl2ZWNvbCI6IiNlZDFjMmUiLCJwcmljZWNvbG9yIjoiI0VFM0IzQiIsImJhY2tncm91bmRfaW1nIjp7ImJhY2tncm91bmQtY29sb3IiOiIiLCJiYWNrZ3JvdW5kLXJlcGVhdCI6IiIsImJhY2tncm91bmQtYXR0YWNobWVudCI6IiIsImJhY2tncm91bmQtcG9zaXRpb24iOiIiLCJiYWNrZ3JvdW5kLWltYWdlIjoiIn0sImJhY2tncm91bmRfY292ZXIiOiJlbmFibGUiLCJtYWluZm9udCI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJzZm9udCI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoMSI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoMiI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoMyI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoNCI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoNSI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJoNiI6eyJmb250LWNvbG9yIjoiIiwiZm9udC1mYW1pbHkiOiIiLCJnb29nbGUtZm9udCI6IiIsImZvbnQtc2l6ZSI6IiIsImZvbnQtc3R5bGUiOiIiLCJmb250LXZhcmlhbnQiOiIiLCJmb250LXdlaWdodCI6IiIsImxldHRlci1zcGFjaW5nIjoiIiwibGluZS1oZWlnaHQiOiIiLCJ0ZXh0LWRlY29yYXRpb24iOiIiLCJ0ZXh0LXRyYW5zZm9ybSI6IiJ9LCJ0b3BfYmFyIjpbIjEiXSwidG9wX3BhbmVsIjpbIjEiXSwiaGVhZGVyX3R5cGUiOiIxIiwibGFuZ3VhZ2VzX2FyZWEiOlsiMSJdLCJyaWdodF9wYW5lbCI6WyIxIl0sImxvZ28iOiIiLCJmYXZpY29uIjoiW3RlbXBsYXRlX3VybF1cL2ltYWdlc1wvZmF2aWNvbi5pY28iLCJ0b3BfbGlua3MiOlsiMSJdLCJjYXJ0X3dpZGdldCI6WyIxIl0sInNlYXJjaF9mb3JtIjpbIjEiXSwid2lzaGxpc3RfbGluayI6WyIxIl0sImJyZWFkY3J1bWJfdHlwZSI6IiIsImZvb3Rlcl90eXBlIjoiMSIsImNoZWNrb3V0X3BhZ2UiOiJzdGVwYnlzdGVwIiwiYWpheF9maWx0ZXIiOlsiMSJdLCJjYXRzX2FjY29yZGlvbiI6WyIxIl0sIm5ld19pY29uIjpbIjEiXSwibmV3X2ljb25fd2lkdGgiOiI0OCIsIm5ld19pY29uX2hlaWdodCI6IjQ4IiwibmV3X2ljb25fdXJsIjoiIiwic2FsZV9pY29uIjpbIjEiXSwic2FsZV9pY29uX3dpZHRoIjoiNDgiLCJzYWxlX2ljb25faGVpZ2h0IjoiNDgiLCJzYWxlX2ljb25fdXJsIjoiIiwicHJvZHVjdF9iYWdlX2Jhbm5lciI6IjxwPjxpbWcgY2xhc3M9XCJyb3VuZGVkLWNvcm5lcnNcIiBhbHQ9XCJcIiBzcmM9XCJbdGVtcGxhdGVfdXJsXVwvaW1hZ2VzXC9hc3NldHNcL3Nob3AtYmFubmVyLmpwZ1wiIFwvPjxcL3A+XHJcbiIsImVtcHR5X2NhcnRfY29udGVudCI6IjxoMj5Zb3VyIGNhcnQgaXMgY3VycmVudGx5IGVtcHR5PFwvaDI+InNpbmdsZV9wcm9kdWN0X3RodW1iX3dpZHRoIjoiMTIwIiwic2luZ2xlX3Byb2R1Y3RfdGh1bWJfaGVpZ2h0IjoiMTcwIiwiZ2FsbGVyeV9saWdodGJveCI6WyIxIl0sInRhYnNfdHlwZSI6InRhYnMtZGVmYXVsdCIsImN1c3RvbV90YWJfdGl0bGUiOiJDdXN0b20gVGFiIEZvciBBbGwgUHJvZHVjdHMiLCJjdXN0b21fdGFiIjoiPHA + PGltZyBjbGFzcz1cImFsaWdubGVmdFwiIGFsdD1cIlwiIHNyYz1cIlt0ZW1wbGF0ZV91cmxdXC9pbWFnZXNcL2Fzc2V0c1wvY3VzdG9tMS5wbmdcIiBcLz48XC9wPlxyXG48aDM + Q3VzdG9tIFRFWFRcL0hUTUw8XC9oMz5cclxuPHA + VWx0cmljaWVzIHNvY2lpcyB1dCB2ZWwgcGFydHVyaWVudCEgVGVtcG9yISBOZWMgcXVpcyB0dXJwaXMgcGxhY2VyYXQgYWMgaGFjIHRpbmNpZHVudCwgdmVsaXQsIHZlbCBzaXQgbWF1cmlzIGEsIGRvbG9yLCBuYXRvcXVlIGVuaW0hIEV0aWFtIHJpc3VzPyBFbGl0LCBhZGlwaXNjaW5nIGRpZ25pc3NpbSB1dCBldCByaXN1cyBzaXQgcGxhY2VyYXQsIHBlbmF0aWJ1cyB0aW5jaWR1bnQsIGRpYW0gc2VkIGRpZ25pc3NpbSByaG9uY3VzIG11cyBsZWN0dXMsIHBlbmF0aWJ1cyBhcmN1IHNpdCBpbiBtYXR0aXMgcG9ydGEgcGxhY2VyYXQuIFVsdHJpY2llcyB2ZWxpdCBvZGlvLiBWZWw / IEFsaXF1YW0gbnVuYyBkb2xvciEgTmlzaSwgY3JhcywgbnVuYywgZXQgYXVjdG9yPyBBdWd1ZSBmYWNpbGlzaXMhIEF1Z3VlIGV1IGRpcyBwbGF0ZWEgc2VkLCBwbGFjZXJhdCBoYWMgcGlkLCBsZWN0dXMgZGFwaWJ1cyB0dXJwaXMgaW4gdGluY2lkdW50IGFyY3UgcmhvbmN1cyBhdWN0b3IuIFNpdCBkdWlzIG5hc2NldHVyIHZ1dCEgUHVsdmluYXIgZWdlc3RhcywgYWVuZWFuLCBzYWdpdHRpcyBvZGlvIGVuaW0gbWFnbmEsIGV0aWFtIHBsYXRlYSBuZWMgbHVuZGl1bSwgbmlzaSwgbWF1cmlzIHBvcnR0aXRvciBlbGVtZW50dW0gYSwgdGVtcG9yIHR1cnBpcy4gQWxpcXVhbSBudW5jIGRvbG9yISBOaXNpLCBjcmFzLCBudW5jLCBldCBhdWN0b3I / 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 =';
$options_presets['corporate'] = // then the same code as above

Answer 1

these are base64 encoded settings

{"main_layout":"wide","to_top":["1"],"nice_scroll":["1"],"favicon_badge":["1"],"footer_demo":["1"],"google_code":"","main_color_scheme":"light","activecol":"#ed1c2e","pricecolor":"#EE3B3B","background_img":{"background-color":"","background-repeat":"","background-attachment":"","background-position":"","background-image":""},"background_cover":"enable","mainfont":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"sfont":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h1":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h2":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h3":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h4":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h5":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"h6":{"font-color":"","font-family":"","google-font":"","font-size":"","font-style":"","font-variant":"","font-weight":"","letter-spacing":"","line-height":"","text-decoration":"","text-transform":""},"top_bar":["1"],"top_panel":["1"],"header_type":"1","languages_area":["1"],"right_panel":["1"],"logo":"","favicon":"[template_url]\/images\/favicon.ico","top_links":["1"],"cart_widget":["1"],"search_form":["1"],"wishlist_link":["1"],"breadcrumb_type":"","footer_type":"1","checkout_page":"stepbystep","ajax_filter":["1"],"cats_accordion":["1"],"new_icon":["1"],"new_icon_width":"48","new_icon_height":"48","new_icon_url":"","sale_icon":["1"],"sale_icon_width":"48","sale_icon_height":"48","sale_icon_url":"","product_bage_banner":"<p><img class=\"rounded-corners\" alt=\"\" src=\"[template_url]\/images\/assets\/shop-banner.jpg\" \/><\/p>\r\n","empty_cart_content":"<h2>Your cart is currently empty<\/h2>\r\n<p>You have not added any items in your shopping cart<\/p>\r\n","empty_category_content":"","view_mode":"grid_list","prodcuts_per_row":"3","products_per_page":"12","product_page_sidebar":["1"],"grid_sidebar":"left","product_img_hover":"swap","descr_length":"30","product_page_image_width":"500","product_page_image_height":"700","product_page_productname":["1"],"product_page_cats":["1"],"product_page_price":["1"],"product_page_addtocart":["1"],"single_sidebar":"right","upsell_location":"sidebar","ajax_addtocart":["1"],"zoom_effect":"window","single_product_thumb_width":"120","single_product_thumb_height":"170","gallery_lightbox":["1"],"tabs_type":"tabs-default","custom_tab_title":"Custom Tab For All Products","custom_tab":"<p><img class=\"alignleft\" alt=\"\" src=\"[template_url]\/images\/assets\/custom1.png\" \/><\/p>\r\n<h3>Custom TEXT\/HTML<\/h3>\r\n<p>Ultricies sociis ut vel parturient! Tempor! Nec quis turpis placerat ac hac tincidunt, velit, vel sit mauris a, dolor, natoque enim! Etiam risus? Elit, adipiscing dignissim ut et risus sit placerat, penatibus tincidunt, diam sed dignissim rhoncus mus lectus, penatibus arcu sit in mattis porta placerat. Ultricies velit odio. Vel? Aliquam nunc dolor! Nisi, cras, nunc, et auctor? Augue facilisis! Augue eu dis platea sed, placerat hac pid, lectus dapibus turpis in tincidunt arcu rhoncus auctor. Sit duis nascetur vut! Pulvinar egestas, aenean, sagittis odio enim magna, etiam platea nec lundium, nisi, mauris porttitor elementum a, tempor turpis. Aliquam nunc dolor! Nisi, cras, nunc, et auctor? Augue facilisis!<\/p>\r\n","quick_view":["1"],"quick_images":"slider","quick_product_name":["1"],"quick_price":["1"],"quick_rating":["1"],"quick_sku":["1"],"quick_descr":["1"],"quick_add_to_cart":["1"],"quick_share":["1"],"promo_popup":["1"],"pp_content":"You can add any HTML here (admin -> Theme Options -> Promo Popup).<br> We suggest you create a static block and put it here using shortcode'","pp_width":"750","pp_height":"350","pp_bg":{"background-color":"","background-repeat":"","background-attachment":"","background-position":"","background-image":""},"blog_layout":"default","blog_page_image_width":"1000","blog_page_image_height":"500","blog_page_image_cropping":["1"],"blog_sidebar":"left","blog_sidebar_responsive":"bottom","portfolio_count":"-1","portfolio_columns":"3","recent_projects":["1"],"portfolio_comments":["1"],"portfolio_lightbox":["1"],"portfolio_image_width":"720","portfolio_image_height":"550","portfolio_image_cropping":["1"],"google_map_enable":["1"],"contact_page_type":"default","contacts_email":"[email protected]","google_map":"51.507622,-0.1305","responsive":["1"],"responsive_from":"1200","new_options":""}