Categories: 3-letter acronym disambiguations An advocacy group, interest group or lobbying group is a group, however loosely or tightly organized, doing advocacy: those determined to encourage or prevent changes in public policy without trying to be elected. ... Signaling, or signal, may mean: Look up signal in Wiktionary, the free dictionary. ... Significant figures (also called significant digits and abbreviated sig figs or sig digs, respectively) is a method of expressing errors in measurements. ... A signature block (often abbreviated as signature, sig block, or just sig) is a block of text automatically appended at the bottom of an e-mail message, Usenet article, or forum post. ... The Summer Instititute for the Gifted (http://www. ... Schweizerische Industrie Gesellschaft or SIG is a Swiss firearms manufacturer, whose products are imported into the USA under the name SIGARMS. In the late 1970s, SIG was one of two builder of Torontos latest streetcar, the CLRV. Only the first five CLRV cars were made by SIG, the rest... SIGARMS is the American incarnation of Swiss manufacturing firm Schweizerische Industrie Gesellschaft (SIG), a company most famous for its firearms, as SIG Arms AG. SIGARMS was set up in 1985 in order to manufacture and import SIGs firearms into the USA, although as of 2000 it has been a... The TLA (three-letter acronym or three-letter abbreviation) is the most popular type of abbreviation in technical terminology, and is also very common in general language. ...