.dwg. DWG (from drawing) is a proprietary[2] binary file format used for storing two- and three- dimensional design data and metadata. It is the native format for several CAD packages including DraftSight, AutoCAD, IntelliCAD (and its variants), Caddie and Open Design Alliance compliant applications.
You and your doctor can decide when it's time for you to begin Pap testing and how often you should have the test. In general, doctors recommend beginning Pap testing at age 21.
Women should have a pap smear by the age of 18, and sooner if they have had had sexual relations. These tests should take place every year once sexual activities begin. After three such negative tests are taken, women can slack off and have a Pap smear every three years.