Changes

The [[CHE]] and CHE++ declarative language for expressing chess knowledge using a [[GUI]] was used to incorporate [[Planning |planning]] features within the [[Oracle|oracle ]] used <ref>[https://www.stmintz.com/ccc/index.php?id=198528 CHE docs in English / Nimzo 3 version] by [[Michael Scheidl|Mike S.]], [[CCC]], November 22, 2001</ref>.