In this paper, we describe and contrast these approaches, and discuss several issues associated with futility analyses, such as ethical considerations, whether or not type I error can or should be reclaimed, one-sided vs two-sided futility rules, and the impact of futility analyses on power.
You can open an AutoCAD DWG or DXF file for review, and then add your comments. For example, you might want to review and annotate a CAD drawing and then return it to the person who created it. On the File menu, click Open. Under Files of type, click AutoCAD Drawing.
Photoshop uses the EPS TIFF and EPS PICT formats to let you open images saved in file formats that create previews but are not supported by Photoshop (such as QuarkXPress). You can edit and use an opened preview image just as any other low-resolution file. An EPS PICT preview is available only in Mac OS.