What it does is lets you open one file to the left and another to the right, then shows a side by side comparison of exactly what is different and where. You can then right click and perform actions to the text, like copying it over to the other file, editing it, etc.
Here is a screenshot:
As you can see I am comparing a hero assault lua to a conquest one. The red highlighted lines are discrepancies between the two files. Right clicking one line would let me copy it over to the other side. Also note this is Beyond Compare 2. Version 3 is in beta but has more features.
Download the trial of v3 here: http://www.scootersoftware.com/beta3/download.php






