Function CelluleDansLaPlage(Plage1 As Range, Plage2 As Range)
[COLOR="SeaGreen"][B]' Renvoie VRAI si la CELLULE "Plage1" est incluse dans la PLAGE "Plage2".[/B][/COLOR]
If Plage1.Count <> 1 Then CelluleDansLaPlage = Evaluate("NA()"): Exit Function
Dim PlageIntersection As Range
Set PlageIntersection = Application.Intersect(Plage1, Plage2)
If Not PlageIntersection Is Nothing Then CelluleDansLaPlage = (PlageIntersection.Address = Plage1.Address)
Set PlageIntersection = Nothing 'Ligne facultative.
End Function