Inside Painted Snuff Bottles-One of the most famous and collectible types of snuff bottles is the inside or reverse painted. These little masterpieces are painted by reaching down through the neck of the bottle with a tiny curved brush or piece of bamboo.
A signature block (often abbreviated as signature, sig block, sig file, .sig, dot sig, siggy, or just sig) is a block of text automatically appended at the bottom of an email message, Usenet article, or forum post. 1  1 Email and Usenet.  1.1 Signatures in Usenet postings.
Certifying Authority. A digital signature is an electronic form of a signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and also ensure that the original content of the message or document that has been sent is unchanged.