Click the Add button in the Preferences | Compare Tools dialog. If you already have an assigned editor you can click Remove or Edit. The Add Compare Tool dialog appears.
In the Add Compare Tool dialog enter a file type in the File Extension field. For example, you may want to configure one compare tool for all java files and a different compare tool for all html, xml files, and so forth.
Note: You can enter * as a wildcard, meaning all extensions
In the Command field, type the path to the editor you wish to associate with the specified file type. If you click Browse, you can navigate to the editor location on your file system.
In the Arguments field you will need to specify the passing arguments. (Each compare tool has its own way of passing arguments, but most use the two "required substitution parameters" listed on the dialog, in some order.) These required parameters must be listed in the Arguments field.
Review the following example which shows how to configure the Add Compare Tool when associating the SourceGear DiffMerge utility with java files. We wish to pass both filenames to DiffMerge, with labels. Thus, the arguments are "%1 /title1=%6 %2 /title2=%7"
Once you have a Compare Tool configured, the next time you open a comparison of the specified file type with Teamprise, it will open using the external comparison tool.