For Search Engine Purposes Meta tags consist of the following:

Meta Title: The this is the title of the page as displayed at the top of the browser

Meta Description: This may appear in some search engines as the content under the title in the search listing. This should be a brief description of the content found on the page.  no more than 2 sentences is recommended.

Meta Keywords: These are keywords that some search engines use to index the content of your page and provide matches based on the keywords of your site and the search terms entered into the search engine.  Note that meta keywords are not as important as they once were but should still be created for each key page in your site.

To manage the meta tags on your page click the Meta Tags button:

This will open the Edit Meta Tag Where you can enter the data for the Meta Tags

***NOTE*** The Meta Keywords should be keywords that are found in the human readable text on the page or in Image Alt Tags