Everything is Item - WordPress Admin Builder

To simplify things, everything that can be created in the admin builder is called Item.

An Item can be

Container: admin page, metabox, user profile
Content
AJAX button
Header
Note
Field: Checkbox, Code, Color, Date, EDD license, Enable, File, Gallery, Multicheck (custom or predefined datas), Number, Radio (custom or predefined datas), Select (custom or predefined datas), Sortable, Text, Textarea, Upload, WYSIWYG

Each item is described separately later in this tutorial