Wrap Surface I CATIA V5 I Bellow Design I Generative Shape Design I GSD I Ex 2 I Advance Surfacing

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Wrap Surface I CATIA V5 I Bellow Design I Generative Shape Design I GSD I Ex 2

[@naveejazhamchalil9281]

Why is there a need for reference surface while using wrap command. Pls explain in detail use of reference surface