My first VBA - Project in Excel

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Sub helloWorld()
MsgBox ("Hello World!")
End Sub

Sub helloWorldtoCell()
Sheets("Sheet1").Select
Cells(1, 1).Value = "Hello World!"
End Sub

Extended   HelloWorld-App:

The app inserts "Hello World1!" and "Hello World2!" into two different worksheets and pauses for 5 seconds in between.

Sub helloWorldtoCellExtended()
Sheets("Sheet1").Select
Cells(1, 1).Value = "Hello World1!"
If Application.Wait(Now + TimeValue("0:00:5")) Then
Sheets("Sheet2").Select
Cells(1, 1).Value = "Hello World2!"
End If
End Sub