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A software wizard or setup assistant or multi-step form is a user interface that leads a user through a sequence of small steps, [1] [2] like a dialog box to configure a program for the first time. They are used to make complex, unfamiliar tasks easier by breaking them into smaller pieces.
German submarine U-643 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.The submarine was laid down on 1 December 1941 at the Blohm & Voss yard at Hamburg, launched on 20 August 1942, and commissioned on 8 October 1942 under the command of Oberleutnant zur See Hans-Harald Speidel.