# fn:innermost - XPath XQuery Reference

Returns every node within the input sequence that is not an ancestor of another member
            of the input sequence; the nodes are returned in document order with duplicates
            eliminated.deterministiccontext-independentfocus-independentspecial-streaming-rulesThe effect of the function call fn:innermost($nodes) is defined to be
            equivalent to the result of the expression:$nodes except $nodes/ancestor::node()That is, the function takes as input a sequence of nodes, and returns every node within
            the sequence that is not an ancestor of another node within the sequence; the nodes are
            returned in document order with duplicates eliminated.If the source document contains nested sections represented by div
               elements, the expression innermost(//div) returns those div
               elements that do not contain further div elements.