Undo System Addition to the Log System, ConceptChoir also provides a system that allows you to undo updates made to the concepts. To enter the ConceptChoir Undo Manager, click the Undo button from the ConceptChoir Vocabulary Explorer Tool Bar as shown in Figure 1. Figure 1. Open Undo Manager Figure 2. Undo Manager In ConceptChoir Undo Manager, you will see a list of updates in the Log List box. Select a update item will put the update detail information into the display area on the right side. In the update detail display, ConceptChoir undo manager will compare the concept before the update, and after the update, and list the changes that you can undo. Uncheck the "This log differ from current concept" checkbox on the bottom will instruct the ConceptChoir Undo Manager not to mark the differences between before update, and after update. To undo an update, just highlight the update that you want to undone, and then click the Undo button. Refresh button will refresh the available undo list and Close button will close the Undo Manager.
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