main properties describe bellow.
name = name of the site. define using "sc_site" query sting parameter.
- if "sc_site" present sitecore check site with same name in "Sites"
section, if not found error occur.
- if "sc_site" Not present sitecore mach host name and virtualFolder
- if host name is not set, sitecore will match all host names define in host file.
startItem = path of the start item of the site
- All relative URL path relative to start item
rootPath - path to root item of the site
you can find more information in flowing url s