Is this an XPath Grammar Limitation ?

Hi All,
XPath allows relative location paths following the FilterExpr. The
FilterExpr can be a PrimaryExpr that can further be a number/Literal
as well. So an XPath that contains a number followed by a relative
location path is valid as per XPath 1.0 grammar. Am I missing
sometihng here, or did the folks wanted to keep it loose enough.
-Menon
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-Ramkumar Menon
A typical Macroprocessor