Compare Files from within a Directory Comparison
Double-clicking a file in either the left or right pane of the Directory Comparison window opens that file and its corresponding sibling in a new File Comparison window. This is applicable only for files that have a sibling on the left or right side; otherwise, only the left or right pane of the File Comparison window is populated.
The new file comparison is opened in the current comparison mode of the directory comparison or—if Quick Comparison is the comparison mode of the directory comparison—in the comparison mode that was the current file comparison mode (Text, XML, Binary, or Extensions) when the directory comparison was opened, respectively.
You can continue to work in the File Comparison window as in a regular file comparison session.