Sub BoutonTexteRetrait()
ActiveSheet.Unprotect Password:="."
Dim Cel As Range
For Each Cel In Selection
Cel = IIf(Left(Cel, 1) = "-", Trim(Mid(Cel, 2)), "-" & Trim(Cel))
Cel.IndentLevel = Cel.IndentLevel + IIf(Cel.IndentLevel = 0, 1, -1)
Next Cel
ActiveSheet.Protect Password:="."
End Sub