Implementing Proof by Pointing without a Structure Editor


A proof by pointing user interface component allows a user to direct the course of a proof assistant by selecting terms with a mouse. Such a gesture is interpreted as a high-level tactical which triggers a sequence of low-level basic commands for the proof engine. The algorithm inherently relies on a structure-conscious environment; as a novelty we show how proof-by-pointing may easily be integrated into an interface without a structure editor. We discuss in detail the use of nested selectable text regions for user interaction, the modifications necessary to the proofengine output, and the algorithm for interpreting selections as proof commands, with particular reference to a concrete implementation using XEmacs and LEGO.

Cite this paper

@inproceedings{Bertot1997ImplementingPB, title={Implementing Proof by Pointing without a Structure Editor}, author={Yves Bertot and Dilip Sequeira and Thomas Kleymann-Schreiber}, year={1997} }