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.
rapÂ·pel. n. A descent from a height, such as a cliff or wall, in which one slides down an anchored rope and applies friction to control one's speed, either by means of a specialized device or by passing the rope under one thigh and over the opposite shoulder. To descend from a steep height by this method.