Tab-Text
This property defines the title of the page identified by the 
Tab-Index property.
When values are enclosed between parentheses, the 
Tab-Index property is ignored, the 1st value refers to the 1st Tab, the 2nd value refers to the 2nd Tab and so on.
 
Example - Get the text of the second page of a tab-control
procedure division. ...   inquire screen-1-tc-1 tab-index 2 tab-text w-page-title ...  |