Content-sensitive Help assists users by providing help based on a specific task they perform. This enables users to get specific information about whatever feature of the application they are using at the given moment.
To access Content-sensitive Help:
Hover your mouse over a button, and you will see the tip which gives you the basic instruction of the feature. If Foxit PDF Editor contains additional help about the feature, you can click Tell me more to learn more about it in Help Center.