Case usage in element names, attribute names & attribute values

Rob McDougall RMcDouga at
Sat Apr 25 00:31:39 BST 1998

>I've been looking through many of the established XML grammars, and am left
>with a question.  Why do all the grammars appear to be in lower-case?  Since
>xml has become case-sensitive, it would seem to me that people would adopt
>one of the popular conventions used in other case-sensitive applications like
>programming languages.  Why haven't I seen any grammars that look like this:
><TagName AttributeName="EnumeratedAttributeValue"/>
>If someone were to create a grammar that mixed upper-case and lower-case
>would they have trouble getting people to adopt it?  Is there a compelling
>reason to reject a mixed case grammar.  To my eye, mixed case is more
>attractive.  It's more like natural English.
>So, what are the opinions on each of:
>- tag names (lowercase, uppercase, mixed-case)
>- attribute names (lowercase, uppercase, mixed-case)
>- enumerated attribute values (lowercase, uppercase, mixed-case)
>And with each option, are there opinions on any punctuation? Hyphens,
>underscores, nothing?
>Thanks in advance,

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