Scroll Bars

Click and drag a Scroll Bar thumb or press D then the keys listed below to operate.

The Scroll Bars are used to move the part of the image shown within the Preview Viewport, and are available at any time the preview image is larger than the Viewport. You can drag the thumb of either or both Scroll Bars, using the mouse to move the image quickly, or click on the other parts of the scroll bar to move it by incremental amounts.

When the Scroll Bars are enabled and the Viewport has the keyboard focus, you can also change the image position using the keyboard. The Preview Viewport will be given the keyboard focus if you click within the image. Another way would be to use the D keyboard shortcut or to use the Tab key to advance the keyboard focus to the Preview Viewport.

You can tell if the Preview Viewport has the keyboard focus by the border that surrounds the image; the border will be a dotted line if the Viewport has focus or a black line if some other control has it.

Keys used for scrolling

When the Viewport has keyboard focus, the following keys are available to move the image in the viewport:

The Up Arrow or Down Arrow keys will move the image down or up one pixel.
The Left Arrow or Right Arrow keys will move the image right or left one pixel.
The Home key will show the upper-left corner of the image.
The End key will show the lower-right corner of the image.
The Page Up or Page Down keys will move the image down or up by a distance equal to the height of the Viewport.
Holding down the Shift key and pressing the Page Up or Page Down keys will move the image down or up by a distance of 10 pixels.
Holding down the Control key and pressing the Page Up or Page Down keys will move the image right or left by a distance equal to the width of the Viewport.
Holding down the Control and Shift keys and pressing the Page Up or Page Down keys will move the image right or left by 10 pixels.