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I was wondering how to add superscript characters like trademark to Drupal block title.

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    Is there a reason why you cannot write “™” or “®” as such?
    – Jukka K. Korpela
    Aug 16, 2013 at 11:47
  • @JukkaK.Korpela That would be invalid HTML
    – Clive ♦
    Aug 16, 2013 at 11:59
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    @Clive, the characters “™” or “®” are certainly allowed as data characters in HTML.
    – Jukka K. Korpela
    Aug 16, 2013 at 13:26
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    @JukkaK.Korpela I'll take your word for it; my assumption was that anything that has an equivalent specific HTML entity defined (®/™) would have been done so for the obvious reason, not just for the sake of it. Could you provide a source?
    – Clive ♦
    Aug 16, 2013 at 13:37
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    For example, the HTML 4.01 specification declares, in its somewhat sloppy style, the document character set as ISO 10646, which is equivalent to Unicode; the formal definition of allowed characters is in the SGML Declaration of HTML 4, which is very theoretical – HTML was never actually implemented as an SGML application – but still reflects the reality in the sense that all Unicode characters, except characters in explicitly excluded ranges, are allowed in HTML.
    – Jukka K. Korpela
    Aug 16, 2013 at 16:59

2 Answers 2

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Block Class Styles may be useful:

Extends the Block Class module to incorporate styles (or themes) rather than css classes. Adds style-based tpl suggestions. Allows HTML in your block titles.

Other options would be to create your block in code, and set the $block->subject to be your <sup> inclusive title, or to override the block-XYZ.tpl.php for the your particular block and add the title in there.

By default, Drupal core runs check_plain on any UI created blocks, so through the UI I don't think there's another option.

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Trademark ™ is just a character, it doesn't need html. There is no reason why you can't have special characters in block titles.

Superscript as in sup tags is a different story, see the other answer.

How to type symbols? http://www.wikihow.com/Type-Symbols-Using-the-ALT-Key

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