gl-tree – Linguistic trees with a preprocessor

Trees are de­scribed by a \tree com­mand fol­lowed by a paren­the­sised out­line of the tree to be type­set. Pos­si­ble out­put in­cludes TeX com­mands, pos­si­bly us­ing PostScript \spe­cials to do the more dif­fi­cult things (like sloped lines).
The pre­pro­ces­sors are spec­i­fied (mostly) as lex ta­bles; a Make­file is pro­vided.