I've installed JSDoc and JSDoc 3 Tool from npm.
npm install git+https://github.com/jsdoc3/jsdoc.git
sudo apt-get install jsdoc-toolkit
The software installed successfully, executed the command (jsdoc -r=doc file.js), and the folder with files was generated.
However, the mark-up is ignored and the index.html links only to the following path, describing the global class:
/docs/symbols/_global_.html
Where have I strayed?