Special Interest Group

The Special Interest Group (SIG) wikisays:-

"A Special Interest Group (SIG) is a community with an interest in advancing a specific area of knowledge, learning or technology where members cooperate to affect or to produce solutions within their particular field, and may communicate, meet, and organize conferences. They may at times also advocate or lobby on a particular issue or on a range of issues but are generally distinct from Advocacy groups and pressure groups which are normally set up for the specific political aim;^{[citation needed]} the distinction is not firm however and some organizations can adapt and change their focus over time."