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The qtree package consists of QobiTree, a package of tree-drawing macros written by Jeff Siskind, and a front end that allows trees to be specified in bracket notation, using whitespace to separate tokens. Tree nodes can have labels of any size or complexity, and are automatically arranged on the page, usually with quite good results. Provisions exist for fine-tuning the default layout. The front end also centers trees (by default) and provides some other nice features.