Preview
Dviout for Windows can display a dvi file on a Windows screen with fonts in the same resolution (dpi) as the fonts used in Printing (by reducing their resolutions on the screen using gray scale). See Q_O30 for details.
In general, using gray scale would results in better readability than without using gray scale for the same display resolution.
If you want to speed up the displaying or you do not want use gray scale, 118-dpi fonts can be used as in the MS-DOS version of the dviout. (In this case, select "Property Sheets -> [Display]" and specify the unscaling, then the gray scale is not used.)
By clicking the right button of the mouse, the loupe function can be used to display an enlarged or reduced section of the page. (The loupe adjustment is "Property Sheets -> [Common]")
Several objects such as the Status Bar in the view can be hidden (View-> ...). Hiding them would results in a larger display for previewing.