Trigger QuickShow with the Space key: Turn this on to trigger QuickShow by pressing the Space key. You can also trigger QuickShow by creating your own hotkey to run the Show QUICKSHOW command.

Dismiss by pressing the trigger key again: If QuickShow was launched via a keypress (e.g. Space), pressing the same key again will dismiss the QuickShow window. You can also press Esc to dismiss it.

Hold and release trigger key to dismiss: If the Dismiss by pressing the trigger key again option is on, this option lets you keep the trigger key held down and dismiss QuickShow by releasing it.

Trigger with the mouse: Trigger QuickShow by clicking and holding the left button over a file, and then clicking and releasing the right button.

Frameless window: Displays the QuickShow window without a titlebar or window frame.

Link QuickShow window to the Lister: If you use the cursor keys in the QuickShow window to browse to another image, the selection in the Lister will update to match.

Show checkerboard behind transparent images: When an image has an alpha channel, displays a checkerboard effect behind it instead of a solid color.

Add all files to next/previous list (instead of only pictures): Includes all files in the next/previous list (e.g. PDFs, Word documents) rather than just recognised pictures.

Maximum size: Lets you limit the size of the QuickShow window to a percentage of the screen size.

Zoom with mouse wheel: Zoom (magnify) the image using the mouse wheel. If turned off, the mouse wheel can be used to scroll (pan) the image and you can zoom by holding down the Ctrl key.