Sitewide Keywords and Description
The main elements for the website are controlled in a configuration file:
→ / your-site /_includes/ config.pcf
Open the config file, check it out and click the Properties tab.
Sitewide metadata like keywords and description are defined at the site level in this config.pcf file .
This means that even if no metadata is supplied on individual pages, keywords and description defined in the site configuration will be applied to all pages.
SEO best practices says that each page should have a unique description for the function
of that page. The title, description and keywords can be overridden at the
within Page Properties by entering page-specific terms in those fields.