The `Plan' file enumerates the files that make up the web. When you run the WebStyler program, it reads all the source files (which have a .g extension) and builds the corresponding HTML files (with a .html extension).
Each source file is a mixture of regular HTML and additional tags that look like HTML but are specific to WebStyler. When WebStyler is run, it reads each .g file and uses them to write the actual .html files that browsers can read.
Source files have two sections: