DiffDog provides Help (the user manual) in two formats:
•Online Help, in HTML format, which is available at the Altova website. In order to access the Online Help you will need Internet access.
•A Help file in PDF format, which is installed on your machine when you install DiffDog. It is named DiffDog.pdf and is located in the application folder (in the Program Files folder). If you do not have Internet access, you can always open this locally saved Help fie.
The Help option (screenshot below) enables you to select which of the two formats is opened when you click the Help (F1) command in the Help menu.
You can change this option at any time for the new selection to take effect. The links in this section (see screenshot above) open the respective Help format.