Templates are used to to customize appearance of your documentation.
1. CHM/Web Help Templates.
CHM template contains of HTML and CSS parts. Each page can have it's own HTML template. HTML templates are divided into HTML and CSS parts. Use HTML to create topic page structure and CSS to change layout.
Also you can append anu number of additional files to templates, that will be published with your project.
Helpinator has built-in Template Builder so you don's even have to know HTML and CSS to create your own template.
2. PDF/RTF Templates
RTF Templates are used to produce RTF and PDF files.