Levenhuk C800 NG Digital Camera, USB 2.0 - Manual (Page 35)

Help Manual
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This command will move the current displayed image to the previous Index listed in
the Undo/Redo sidebar (If it is not in the " Open " status).
Backward Demo
1. Choose Open Image••• to open an image;
2. Choose Image>Adjust>Auto Level command;
3. Choose Image>Adjust>Invert command The final image is shown in Index 3.
Since it is in the final step (Fig.3), the Edit>Backward will be enabled;
4. Choosing Edit>Backward , the image and the Index will return to Index 2 as shown
in Fig 2. Since it is in Index 2, Edit>Forward will be enabled;
5. Choosing Edit>Backward again, both the image and the Index will return to Index
1 as shown in Fig.1. Since it is in the 3rd step, Edit>Forward will still be enabled, but
Edit>Backward will now be disabled.
See Edit>Forward for further information.