WARUM funktioniert dieses makro???

Sub Blattschutz_löschen()
On Error Resume Next
For i = 65 To 66
For j = 65 To 66
For k = 65 To 66
For l = 65 To 66
For m = 65 To 66
For n = 65 To 66
For o = 65 To 66
For p = 65 To 66
For q = 65 To 66
For r = 65 To 66
For s = 65 To 66
For t = 32 To 126
ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & _
Chr(n) & Chr(o) & Chr(p) & Chr(q) & Chr(r) & Chr(s) & Chr(t)
Next t
Next s
Next r
Next q
Next p
Next o
Next n
Next m
Next l
Next k
Next j
Next i
MsgBox "Fertig"
End Sub