The author META tag defines the name of the author of the document being read
The expires META tag defines the expiration date and time of the document being indexed and requires RFC1123 date format, for example: Thu, 04 Oct 2010 14:21:20 GMT
The abstract META tag is a one line sentence which gives an overview of the entire webpage
Copyright: no need to add ©, it will be added automatically
Designer = Webmaster
Publisher: Company that publishes material being read or sold on a web site
The Revisit META tag defines how often a search engine or spider should
come to your website for re-indexing. For example: 2 Days, 3 Days, 4 Days, etc.
Note: Just ad number(s), word Days will be added automatically
Distribution: Global (indicates that your webpage is intended for
mass distribution to everyone), Local (intended for local distribution
of your document), and IU - Internal Use (not intended for public distribution).