sig block /sig blok/ n.
[Unix; often written `.sig' there] Short for `signature', used specifically to refer to the electronic signature block that most Unix mail- and news-posting software will [automagically] append to outgoing mail and news. The composition of one's sig can be quite an art form, including an ASCII logo or one's choice of witty sayings (see [sig quote], [fool file]); but many consider large sigs a waste of [bandwidth], and it has been observed that the size of one's sig block is usually inversely proportional to one's longevity and level of prestige on the net. See also [doubled sig].
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