formed (1)

formed [options]

This manual page documents briefly the formed command.

formed is a window-based program for constructing, displaying, and managing first-order logic formulas. The main motivation for constructing formed was the desire to have formulas displayed in a readable, two-dimensional format. Users of formed can make two kinds of transformation on formulas: (1) logic transformations, such as negation normal form translation, which preserve the meaning of a formula, and (2) edit transformations, which can be used to make arbitrary changes, such as adding a hypothesis to a subformula. formed was written by using the X Window System, Version 11, and code from the theorem prover otter.

A summary of options is included below.

-l filename

Load formulas in the specified file during startup. Formulas can also be loaded after startup with the button Load in the main menu.

-f color

Use the named color for the foreground on color monitors (ignored on black-and-white monitors).

-b color

Use the named color for the background on color monitors (ignored on black-and-white monitors).

anldp(1), mace2(1), otter(1).

``FormEd: An X Window System application for managing first-order formulas'' (McCune et al.), available from http://www.osti.gov/energycitations/servlets/purl/6427100-WtOa4g/6427100.PDF

formed ws written by William McCune <[email protected]>

This manual page was written by Peter Collingbourne <[email protected]>, for the Debian project (but may be used by others).