Excluding Content not Linked Directly or Indirectly from Targets

One way to completely exclude content from online output is to place condition tags on the topic files and include or exclude them from the targets (see About Conditions). Another method—discussed here—is to use an option in the Target Editor to include only content files that are directly or indirectly referenced from the target. This means that if the target is using particular files such as a table of contents (TOCs), master page, and so on, other files linked directly or indirectly from them will be part of the output.

Using this option can help prevent bloated output by excluding unused files.