AccuRev has several Diff/Merge tools that are listed by default in the dropdowns on the Diff/Merge tab. While it doesn't appear so, these are actually edit boxes. To change to a tool like Beyond Compare 3, please follow these guidelines.
* Select Preferences from the Tools menu.
* Switch to the Diff/Merge tab.
* Diff: overwrite the preset with: "C:\Program Files\Beyond Compare 3\bcomp.exe" %1% %2% /lefttitle="%3%" /righttitle="%4%"
* Merge (v3 Pro): overwrite the preset with: "C:\Program Files\Beyond Compare 3\bcomp.exe" %1% %2% %a% /mergeoutput=%o% /lefttitle="%4%" /righttitle="%5%" /centertitle="%3%"
These settings can be extrapolated to other installed locations and other Diff/Merge tools.
For more information, please contact AccuRev Support.