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Common GroundEarlier document exchange software from Hummingbird Ltd., Toronto, Ontario, (www.hummingbird.com) that converted a Windows or Mac document into a proprietary file format called DigitalPaper for viewing on other machines. The viewer allowed multiple documents to be displayed at the same time. Adobe's PDF file format became the industry standard for this function and caused Common Ground to become obsolete. In 2006, Hummingbird became a division of ECM software leader Open Text Corporation.
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1. A nailing strip fixed in a masonry or concrete wall as a means of attaching wood trim or furring strips; also called a common ground, rough ground, fixing, fixing fillet, fixing slip.
2. A plaster ground.
3. The side of an electric circuit connected to the earth, used as a common return.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.