# CTAN update: prooftrees

Bug fix for https://tex.stackexchange.com/q/479263/39222; addition of auto move boolean for disabling automatic algorithm for line moves.

This package is located at http://mirror.ctan.org/graphics/pgf/contrib/prooftrees More information is at https://www.ctan.org/pkg/prooftrees

Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .

## prooftrees – Forest-based proof trees (symbolic logic)

The package supports drawing proof trees of the kind often used in introductory logic classes, especially those aimed at students without strong mathematical backgrounds. Hodges (1991) is one example of a text which uses this system. When teaching such a system it is especially useful to annotate the tree with line numbers, justifications and explanations of branch closures.

`prooftrees` provides a single environment, `prooftree`,
and a variety of tools for annotating, customising and highlighting
such trees. A cross-referencing system is provided for trees
which cite line numbers in justifications for proof lines
or branch closures.

prooftrees is based on forest and, hence, TikZ. The package requires version 2.0.2 of Forest for expected results and will not work with version 1.

Package | prooftrees |

Version | 0.9 |

Copyright | 2016–2023 Clea F. Rees |

Maintainer | Clea F. Rees |