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You can select a Tab that will be displayed as a the Default Tab.
When you open the Tabs component then the default tab will be the one open for viewing.the layout is rendered the Default Tab will be displayed on the Tabs
e.g. You have three tabs Personal Details, Educational Details, and Address Details and you set a default tab 1 then you can land on the Educational Details tab when you open the form
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Limit
Limit let you to decide the number of tabs you want to display
If the Tab limit exceeds the entered value, then remaining tabs will be appearing in drop down list format
If you enter the value for example 4 then it will display four tabs and if you added above four tabs, then it will display the fifth tab in the drop-down list format