The default file merge tool in the desktop and web clients, and the Visual Studio integration, is Araxis Merge, a two-way and three-way file comparison (diff) and merging tool.
To access help in Araxis Merge:
Click the Help (?) button at the top right of the Araxis Merge window.
Press the F1 key.
Some windows also contain a Help button.
Note: You can change the default file merge tool to the legacy Merge Tool or any other third party application. For details about configuring the default merge tools, see Administration.