.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.
The Pap smear is currently the best test available for the prevention of most cases of cervical cancer. All women between the ages of 18 and 70 should have a Pap smear every two years. Women should start having Pap smears between 18 and 20 years of age or one to two years after becoming sexually active. It is important to know that no screening test is 100 per cent accurate.