Create Element
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- Operation
- Append All to Root:Create all elements in the UI file (except those that are disabled) and add them to the root container
- Append One to Root:Create a specified element in the UI file (whether it is disabled or not) and add it to the root container
- Append All to Element:Create all elements in the UI file (except those that are disabled) as children of the specified element
- Append One to Element:Create a specified element in the UI file (whether it is disabled or not) as a child of the specified element