wordpress - add_meta_box() input field displaying at the top of the page - Stack Overflow
add_meta_box() – Adds a meta box to one or more screens. WP Function.
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Add Meta Box WordPress Custom Post Type - WPLauncher
Add Meta Box WordPress Custom Post Type - WPLauncher
How to Remove Core Meta Boxes/Panels in WordPress Post Edit Screen – Web/ Design/ Vista
add_meta_box() – Adds a meta box to one or more screens. WP Function.
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WordPress Add_meta_box to Custom Post Type
add_meta_box() – Добавляет дополнительные блоки (meta box) на страницы редактирования/создания постов, постоянных страниц или произвольных типов записей в админ-панели.
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WordPress Meta Boxes – Ultimate Tutorial
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