MacSTAC was founded on April 1, 1978 as an Apple II MUG. We are a community group with members from all walks of life, careers and levels of ability. We welcome all Mac users to improve their knowledge and, in turn, share their Mac knowledge with others.

Tuesday, January 05, 2010


You found a file with an extension that won't open.
What is it? This web site can tell you.

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