It is a work in progress. This product was formerly called Doctor Help. Cross references can also be defined. Keywords are automatically defined in by splitting the title of each topic into separate words. Create a directory on your hard disk, eg.
ANY directory is fine.
Copy the zip file there and unzip it. This file contains a macro which will install the files for you. You need at least version 3.10.505 of the Help Compiler. The installation process allows you to find the Help Compiler on your disk.