Display Menu

<-Menu Bar Size
    Magnify: magnifies the Preview by one step.
    Reduce: reduces the preview by one step.
    Fit: displays fit in the display window size.
    Full: displays in the largest size that can be previewed by only scrolling either vertically or horizontally.

Preset
   View 1, View 2, View 3, View 4: selects the (4) view types set by [Display] of Property Sheet.

Contrast
    Blacker: increases the contrast of the letters (adjusts the gray scale)
    Whiter: decreases the contrast of the letters.
    Reverse: reverses black and white.

Loupe
   magnify: Increase the loupe magnification.
   reduce: Decrease the loupe magnification.
   bigger: Increase the loupe size.
   smaller: Decrease the loupe size.
   measure: Write measure in the square loupe.
   kill cursor: Erace mouse cursor in the loupe.

Region
   On: Indicate a rectangular region by the click of the left and right button of the mouse while the SHIFT key is pressed. A toggle switch.
   Cut: Cut the region as a sheet.
   Recover: Recover the original sheet.

Mouse shape: switches the cursor shape of the mouse (when hand shaped, you can scroll the display without using the scroll bar.)

two pages: Two pages are displayed together(toggle switch).
rev-two pages: Two pages are displayed from right to left.
Y-two pages: Two pages (all pages in Presentation Mode) are displayed vertically.
cross pages: Four pages are displayed together in a reduced size. Scroll pages by Page Up/Down, Space/BS key. Jump to the pointed page by the right button of the mouse.
16 pages: 16 pages are displayed together in a reduced size. Scroll pages by Page Up/Down, Space/BS Key. Jump to the pointed page by the right button of the mouse.

Graphics: enables/disables reading Graphic Files(If this is checked, the specification of -GS: is referred).
Color special: turns ON/OFF the color of letters specified by specials
Color replace: switches AND-operation/REPLACE for the color topcoat. White is always REPLACEed.
Kill stop level: ignores <levels> in dviout specials `+<levels>.