Build tags provide authors with power and flexibility. Consider how your project is designed when you use them because the results can vary.
Hyperlinks: If your project includes links to topics that are excluded from the build, the links remain valid and users will be able to access the topics. Therefore, do not link to these topics if you do not want users to navigate to them from other topics.
Keywords: If keywords are referenced by topics that are excluded from the build, these keywords will not be available from the Index tab. This applies to index file keywords.
Books and pages in the table of contents: If pages in the table of contents are targeted to topics that are excluded from the build, these pages are removed from the Contents tab. The same results occur for books that link to topics.
Related topic links: If your related topic links include topics that are excluded from the build, the links remain valid and users will be able to access the topics. Therefore, do not include related topic links to topics you want to exclude from the build.
ALinks: If your ALinks include topics that are excluded from the build, the links remain valid and users will be able to access the topics. Therefore, do not include ALinks to topics you want to exclude from the build.
Keyword links: If your Keyword links include topics that are excluded from the build, the links remain valid and users will be able to access the topics. Therefore, do not include keyword links to topics you want to exclude from the build.
External .CHM files: If external .CHM files are included in the project, all information in these files is available from the links you have to the external topics. Build tags have no effect on these files (even if these external .CHM files include their own build tags).