How to use a custom compare tool with Perforce?

I have copy of Grigsoft's Compare it! tool, can anyone tell me开发者_Python百科 how to use it with Perforce source control?

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In P4V, click the Edit->Preferences menu item to open the Preferences dialog. Click "Diff" then select the "Other application" option then enter the path to your compare tool's executable. Click OK and it will now use this tool for diffs. You'll probably want to do the same thing for the default "Merge" application.