Filename: The output chm filename. Do not use "#" and other special characters in the file name.
Title: The document title for displaying in the CHM viewer’s title-bar and the header section.
Language: Please ensure that these languages are the same: Windows language, Word document language and this Language option.
The Language option is not required by CHM Modern. In fact, CHM Modern supports multilingual/Unicode in a help system.
Create HHP file: Creates the HTML Help Project files (.hhp file and related HTML files).
Do not use this option if you are not familiar with HTML Help Project files.