Directory macros/latex2e/contrib/prftree

The prftree package provides a package to write proof trees for
natural deduction calculi, sequent-like calculi, and similar.

The package is composed by the filed
- prftree.sty: containing the LaTeX engine to typeset proof trees;
- prftreedoc.pdf: the human readable documentation for the package;
- prftreedoc.tex: the source code for the documentation.

The package is distributed under the GNU General Public License.