If, (i) a file or directory you select for comparison has previously been compared with another file or directory, respectively, and (ii) the Support Recently Compared Pairs option in the Diff and Merge menu has been toggled on, then the Recently Compared Pairs dialog box (shown below) appears. This dialog box contains a list of the five files or directories with which the file or directory being opened has most recently been compared.
If you wish to compare the file or directory being opened with one of the files or directories listed in this dialog box, select the item from the list in the dialog box and click OK. This causes both files or directories to be opened, one in each pane. If you do not wish to select any of the items listed in the dialog, click Cancel. This causes the file or directory to be opened alone; you now have to select the file or directory with which you wish to compare it in the second pane.
|Note:||Clicking Cancel causes the selected file or directory to open in one pane without opening any previously compared file or directory in the other pane. Clicking Cancel does not stop the selected file or directory from being opened. If you wish not to have the Recently Compared Pairs dialog box appear each time you open a document, then toggle the Support Recently Compared Pairs option off.|