Don't use “custom DTDs”!
What's with the <blink>?
The W3C Style page contains a <blink> element. <blink> is not an HTML element and yet the page is valid according to some HTML validators. What's the trick?
In fact, the page is syntactically valid, because the element is declared in the document. As long as elements are properly declared, the page is valid in the SGML/XML sense.
But the page is not semantically valid. It is an SGML document, but it is not an HTML document. There is no official standard that defines what <blink> means.
The W3C Style page uses a non-standard element as a joke. If you know the history of CSS you may remember that one of the reasons for CSS was precisely to avoid that every browser invented its own non-standard elements, such as <blink>.
May 20, 2011
Blink and You'd Miss it! Don't use “custom DTDs”!
Hint.
Strange and wonderful dance
Strange and wonderful dance Strange and wonderful dance
- Strange
- and dance
- wonderful
Ever gone broke in a big way Ever done the opposite of what the experts say
Bob
Tell
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Ever gone broke in a big way Ever done the opposite of what the experts say
Me
Dylan 
ell me Tell me Are you lookin' at me and thinking of somebody else Can you feel the heat and the beat of my pulse Do you have any secrets That will only come out in time Do you lay in bed and stare at the stars Is your main friend someone who's an old acquaintance of ours --I've got to know An has it died out and melted like the snow
T
ell meTell me Tell me--
T
ell me--T
ell me Tell me Tell me--T
ell me -CLARK 
HAIRLINE
T ell me Tell me Are you lookin' at me and thinking of somebody else Can you feel the heat and the beat of my pulse Do you have any secrets That will only come out in time Do you lay in bed and stare at the stars Is your main friend someone who's an old acquaintance of ours
--I've got to know
T
Does that flame still burn, Does that fire still glow Or has it died out and melted like the snow
T ell me Tell me Tell me--
T
ell me--T ell me Tell me Tell me--what's in back of them pretty brown eyes Tell me--behind what door your treasure lies Ever gone broke in a big way Ever done the opposite of what the experts say Tell me
T
ell me
T ell
ME
-
is my name in your book Tell me--will you go back and take another look
Tell meZwei Boxkämpfer jagen Eva quer durch Sylt.Bob
Tell
|
Me
Dylan
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TYPE DESIGN
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ABOUT
SORRY, BOB!-
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Swaggart Camp Meeting Medley
Jimmy Swaggart Camp Meeting >ME--dley
what are you focused upon will it come to me after you're gone Tell me quick with a glance on the side Shall I hold you close or shall I let you go by Is it some kind of game that you're playin' with me Am I imagining something that never can be Do you have any morals Do you have any point of view Is that a smile I see on your face Will it take you to glory or to disgrace Tell me Tell me Tell me-- is my name in your book Tell me--will you go back and take another look Tell me the truth, tell me no lies Are you someone whom anyone prays for or criesTell meZwei Boxkämpfer jagen Eva quer durch Sylt.