Insertion-Index
This numeric property affects the position where a new Tab is added to a Tab-Control control when the Tab-To-Add property is set. If this property is set to a positive value, the Tab is inserted immediately before the Tab the property refers to. When set to 0, the new Tab is appended after the last existing Tab.
 
Example - Add one page to a tab-control
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procedure division.
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  modify screen-1-tc-1 insertion-index 2 
         tab-to-add "Other Page" 
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