Nondrinkers do not appear to have a higher risk of esophageal cancer. Brooks and colleagues say health care providers should ask their patients about whether they experience redness after drinking alcohol. If so, this should be treated as a warning sign of heightened esophageal cancer risk, requiring screening.
These add-ons are equivalent to saving the file as a .dwg or .dxf file in the user interface. To save the files through the user interface, click Save As on the File menu. In the Save As dialog box, on the Save as type list, select AutoCAD Drawing (*.dwg) or AutoCAD Interchange (*.dxf).
Adobe Acrobat and Acrobat reader files. The ENV file extension is primarily associated with Adobe Acrobat and Acrobat Reader files. An ENV file holds spelling and format setting information. Acrobat lets you capture a document and then view or share it in its original format and appearance. To view an Acrobat document, which is called a Portable Document Format (PDF) file, you need Acrobat Reader.