Information on including Facebook, Google, Twitter, etc can all be found in the developer sections of those sites.
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is it the same in HTML 5
is not the same as
......XHTML 1.0 Transitional//EN......
more about DOCTYPE declaration:
As mentioned, check with their developer sections for specifics.
Thanks for your suggestions.
I have checked the google and fb developers sections and read the w3schools.com/tags/tag_doctype.asp
Regretably I don't understand the sytax involved here and this hasn't been covered on FB or Google that I can see. I am trying to place the required code into an html tag. Here is what I get from google...
<!-- Update your html tag to include the itemscope and itemtype attributes -->
<html itemscope itemtype="http://schema.org/">
My existing page html tag looks like this...
I do not know if I do ....
Or if I am completly wrong and there is another method?
Thanks for any help