If you have configured a third party diff tool, you can use Shift when selecting the Diff command to use the alternate tool. In fact I have to do Refresh quite often when I work with Eclipse. It does three-way comparison in merges and has synchronization links to use if you've changed the order of functions. Unfortunately this will mark a large number of lines as changed, even though there is no change to the meaning of the code. Information on Requirements, Installation, Development etc.
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