There are four steps for using build tags with Help projects:
Create the build tag: You can create the build tag from the Build Tags folder in the Project Manager. You can also create new build tags at the same time that you assign them to topics (Topic Properties dialog).
Assign the build tag: You can assign build tags to a specific topic or you can assign them to multiple topics (Topic Properties dialog – Advanced tab).
Specify the build tag expression: The program uses build expressions to determine which topics to include in the output. Build expressions can also be used to exclude topics from the output. If you do not specify any build expressions, all topics in your project are included in the output.
Generate output: For Microsoft HTML Help, compile your project to build the custom .CHM file. For WebHelp and JavaHelp, generate the output files.