Identical production rules

Pierre Morel pierre-morel at
Mon Sep 27 23:37:50 BST 1999

Why the XML specs declare two production rules with identical structure ?

[30]  extSubset ::=  TextDecl? extSubsetDecl


[79]  extPE ::=  TextDecl? extSubsetDecl

I don't understand very well the purpose of having two identical production

Best regards,

Pierre Morel

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