Conditions allow you to show or hide information in your source documents and in your online output. You apply conditions to the content in your source documents, and then you set the visibility for those conditions either in your source documents or in your ePublisher project.

For example, your source documents might contain some content that should be displayed in only the printed version and other content that should be displayed in only the online version. You can use the same set of source documents for both printed and online versions through the use of conditions. You can create one condition called PrintOnly specifically for printed content, and then you can create another condition called OnlineOnly specifically for online content. After you create the PrintOnly and OnlineOnly conditions, you can apply them to the appropriate content in your source documents.

After you apply conditions in your source documents, ePublisher can use the conditions defined in your source document to control the visibility of content when it generates output. You can also change the visibility specified for any condition in your ePublisher project. Changing the visibility specified for any condition in your ePublisher project does not change the visibility specified for the condition in your source documents.