The History Screen

The third and final screen presents three lists of older snapshots you may revert to. You will find the log of changes for three lists: (1) KB: the removals, replacements, and changes committed; (2) EB IC and (3) CB IC: the removals and replacements made.
Each snapshot k captures the list contents immediately before change k is applied. The numbering of the snapshots starts at 0 and continues in ascending order.

To view a particular KB snapshot, you may:

• either use the vertical scrolling bar that appears on the right hand side of the KB Snapshots list when there are more snapshots than can be displayed on one screen;
• or select its snapshot number from the drop-down list below the KB Snapshots list.

To view a particular EB IC snapshot, you may:

• either use the vertical scrolling bar that appears on the right hand side of the EB IC Snapshots list when there are more snapshots than can be displayed on one screen;
• or select its snapshot number from the drop-down list below the EB IC Snapshots list.

To view a particular CB IC snapshot, you may:

• either use the vertical scrolling bar that appears on the right hand side of the CB IC Snapshots list when there are more snapshots than can be displayed on one screen;
• or select its snapshot number from the drop-down list below the CB IC Snapshots list.

Selecting a snapshot number from a drop-down list will cause the first line of the selected snapshot to be highlighted and displayed in the snapshots list above.
Similarly, selecting a change number from a drop-down list will cause the first line of the selected change to be highlighted and displayed in the change history list above.

To revert the current KB list on the main screen to a particular KB snapshot, do the following steps:

1. Select the number of the snapshot from the drop-down list below the KB Snapshots list;
2. Press the revert button immediately to the right of the drop-down list; and
3. A dialog box with options Revert and Cancel will ask you to confirm the revert operation. Either click option Revert to revert, or click option Cancel to cancel the revert.

To revert the current EB IC list on the integrity constraints screen to a particular EB IC snapshot, do the following steps:

1. Select the number of the snapshot from the drop-down list below the EB IC Snapshots list;
2. Press the revert button immediately to the right of the drop-down list; and
3. A dialog box with options Revert and Cancel will ask you to confirm the revert operation. Either click option Revert to revert, or click option Cancel to cancel the revert.

To revert the current CB IC list on the integrity constraints screen to a particular CB IC snapshot, do the following steps:

1. Select the number of the snapshot from the drop-down list below the CB IC Snapshots list;
2. Press the revert button immediately to the right of the drop-down list; and
3. A dialog box with options Revert and Cancel will ask you to confirm the reversion. Either click option Revert to revert, or click option Cancel to cancel the reversion.