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2.4.4 Input Sources "The input functions are described informally here; they are defined in [XQuery and XPath Functions and Operators 3.1]." Followed by a bulleted list of input functions supported by XPath 3.1 with informal definitions, http://www.w3.org/TR/xpath-functions-31/#fns-on-docs defines: 14.8.1 fn:doc 14.8.2 fn:doc-available 14.8.3 fn:collection 14.8.4 fn:uri-collection 14.8.5 fn:unparsed-text 14.8.6 fn:unparsed-text-lines 14.8.7 fn:unparsed-text-available 14.8.8 fn:environment-variable 14.8.9 fn:available-environment-variables A differently ordered listing in 2.4.4 makes comparison more difficult than otherwise necessary. I take it that XPath 3.1 does NOT support fn:doc-available and fn:unparsed-text-lines? Wouldn't it be better to use the same list order as in Functions and to note the omissions? Not to mention dropping the informal definitions in favor of the ones in Functions. Reasoning partial information isn't as useful as complete information. "These input functions are all specified in [XQuery and XPath Functions and Operators 3.1], which specifies error conditions and other details not described here." Why the second reference to [XQuery and XPath Functions and Operators 3.1]?
Done.