Offscreen bitmaps will not be used for images that are not compressed.  To create offscreen bitmaps for any kind of image, compressed or not, click this box.

To prevent the use of offscreen bitmaps for images that are not compressed, check this box.

Offscreen bitmaps will be maintained at the image’s original size.  To reduce the size of offscreen bitmaps and to speed up drawing, check this box.

To maintain bitmaps at the image’s original size, click this box.  Original size bitmaps require more memory and slow down drawing, but speed up image manipulation.

Prevents offscreen bitmaps from being used.  This option is selected.

To prevent offscreen bitmaps from being used, click this button.  This means that you will never see the benefits fast window updates.

Makes offscreen bitmaps optional.  This option is selected.

To make offscreen bitmaps optional, click this button.  This allows you to enjoy the benefits of fast updates when enough memory is available.

Makes offscreen bitmaps a requirement for all images.  This option is selected.

To make offscreen bitmaps a requirement for all images, click this button.  This helps ensure that all image windows will be updated quickly.