ANTLR, ANother Tool for Language Recognition, is a language tool that provides a framework for constructing recognizers, interpreters, compilers, and translators from grammatical descriptions containing actions in a variety of target languages.
ApproachâThe route or walk in to the base of a climb. AscenderâAny mechanical device that slides upward when put on a fixed rope but catches when weight is put on it, allowing a climber to use the rope to move upward or to haul gear. Used in aid climbing, mountaineering rescue and caving.
1. rappel - (mountaineering) a descent of a vertical cliff or wall made by using a doubled rope that is fixed to a higher point and wrapped around the body. abseil. mountain climbing, mountaineering-the activity of climbing a mountain. descent-the act of changing your location in a downward direction.