<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> <pkgmetadata> <herd>perl</herd> <longdescription lang="en"> Sort::Tree implements a mechanism for sorting a list of objects into a tree structure and flattening it back into a list. Among other things, this is useful for displaying database queries in hierarchical views, such as nested categories, parent-child relationships, threaded discussions, and so forth. </longdescription> </pkgmetadata>