20/20 allows you to set global preferences that affect 20/20's appearance and functionality. Figure 1 shows the Preference Dialog.

Figure 1.

You may bring up the Preferences dialog by either selecting "File|Preferences" from the menu or by clicking on the "Preferences" speed button on the Main toolbar. Preferences are broken down into five categories:

1. Auto Save. Options relating to saving captured images.
2. Capture. Options for capturing images.
3. Display. Options used when displaying images.
4. File. Options related to saving files.
5. Miscellaneous.

Auto Save

Figure 2.

The Auto Save tab contains the options used for automatically saving images that are being captured.  By default, when you capture images, the current image being viewed is automatically replaced by the image that has just been captured.  If you need to capture several images, the Auto Save feature can save you time during the capture process.  Without it, you would have to manually save each captured image before capturing the next one.

Output Directory
Specify the drive and directory where you want the images to be saved.

AutoSave
Select "Yes" to have captured images automatically saved.

Replace
To have existing images automatically replaced, select "Yes". If "No" is selected, 20/20 will prompt you as to whether or not you want to replace an existing image.

File Prefix
The file name of the image that is saved, is made up two parts.  The prefix and the sequence number.  For example, if you enter "IMG" in the file prefix field, the first image capture will be named "IMG1.???". (??? denotes the type of file being saved)

Start Sequence
The start sequence number is the number 20/20 should begin using when creating the first file name.  20/20 automatically increments the sequence number after each capture.

Out File Type
Specify the format of the file you want 20/20 to save the captured image in.

Capture

Figure 3.

The Capture tab contains the options relating to capturing images. To initiate an image capture, you must press the "Capture Key" combination as defined here.  For example, if the "Ctrl Key" and "F10" options are checked, you will need to hit Ctrl-F10 to capture an image.

Key Options
Check these options if you want the Ctrl and Shift keys to be part of the "Capture Key" combination.  If these are not selected, you simply need to press the key specified in the "Capture Key" group.

Feed Back
If "Beep" is selected, 20/20 will beep when the capture has been completed.

Capture Key
The key designated for initiating the capture.

Timed Options
20/20 has the ability to automatically capture images at timed intervals.  This may be useful if you want to do unattended captures.  Check the "Time Capture" option if you want to perform timed captures.  Then specify the capture interval in seconds.  In order to discontinue timed captures, simply un-check the "Time Capture" option.

Miscellaneous
The "Capture Scrolled Area" option allows you to capture the scrolled area of a window.  This is particularly useful when capturing web pages that are being displayed inside of a browser.  If this option is selected in conjunction with the "Capture Selected Window" option, 20/20 will detect if the selected window has a vertical scroll bar.  If so, 20/20 will capture the entire contents of the window by capturing and scrolling the selected window.

Display

Figure 4.

The Display tab contains options that control how images are displayed by 20/20.  If you're not sure what Display Resolution or Dithering means, please see the Note that gives a brief explanation on these topics.

Dithering
Indicate whether or not you want dithering performed when displaying images in a lesser resolution.  Also indicate the type of dithering to perform.

Image Resolution
Select the resolution that you want 20/20 to display the image in.  If you select a resolution that is less than the resolution of the image, 20/20 will dither the image.

Blit Mode
Blit mode is used to determine how to display zoomed images. 

Use Global Palette
Tells 20/20 whether or not to use a global palette for images with different palettes.   Used when viewing images in split screen mode.

Enable Undo
20/20 tracks up to four undo levels.  If you make a change to an image, select "Edit|Undo" to restore the image as it was before it was changed.  The capability to undo changes utilizes more memory.

File

Figure 5.

The File tab contains options that are applied when you save images.

Save Resolution
This indicates the resolution that you want the image saved in.

JPEG Quality
When saving in the JPEG format, this option indicates the quality to save the image.  100% is the best quality but also uses the most disk space.  75% usually gives you the best quality for the space used.

JPEG Smoothing
When saving in the JPEG format, this indicates the extent of smoothing to use.  0 is no smoothing and 100 is full smoothing. Because of the lossy compression of JPEGs, an image might be too harsh, smoothing can give it a better look.

Miscellaneous

Figure 6.

The Miscellaneous tab contains miscellaneous options that control the appearance and operation of 20/20.

ReOpen Options
The File menu contains a menu item named "ReOpen".  This menu item will display a list of recently opened files from which you can choose to reopen.  Here you can specify the maximum number of files to track.  You can also clear the list of files by clicking on the "Clear List" button.

Cursor Coordinates
20/20 displays the current cursor location in the status bar.  Here you can choose the units of measure that you want displayed.

Load Last Image
If Load Last Image is checked, 20/20 will automatically load the last image you have displayed the next time 20/20 is started.