High-performance tools are available for compiling and debugging Microsoft HTML Help projects, including a flexible compiler pane. While your project compiles, the program monitors the progress and provides instant feedback in the compiler pane. It reports information about missing topics, errors in the content of topics or in the index file, and broken links.
You can resize the compiler pane, open and close it from view and even turn it off by default — if you want to compile your project in the background and do other work at the same time.