Kernrechtsfrage
Whether the appeal should be struck off the docket after withdrawal.
Extrahierter Entscheid
The proceedings were discontinued and struck off as withdrawn.
Extrahierte Begründung
The appellant withdrew the filing by letter of 6 May 2009, so the President could discontinue the appeal under Art. 32(2) BGG in conjunction with Art. 71 BGG and Art. 73 BZP.