sig binary format

[Jean-Jacques Brucker]

Hi, I have a question concerning the first octet of *.sig file (created with --detach-sign option). 

I have see almost data match section 5.2.3. of the RFC4880, but i am asking me why is the first octet of a *.sig file (packet tag) 0x88 ?
According to section 4.3 of RFC4880 0x88 means "Compressed Data Packet", I was instead expecting 0x82 for "Signature Packet" !?

(sorry for a such annoying question).

regards,
-- 
Jean-Jacques B.
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