Tab-Enabled
This property specifies whether the page identified by the Tab-Index property can be selected by the user or not. A value of 0 means that the page is disabled, so clicking on that page will produce no effects. A value of 1 means that the page is enabled, so the user can select it. Each page is enabled by default.
 
Example - Modify a Ribbon control to disable the third page
procedure division.
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  modify screen-1-rbn-1-hdl tab-index 3 tab-enabled 0
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