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.
Climb Every Mountain. Mountaineering, also called alpinism, is not only climbing mountains the hard way with an ice axe, crampons, cams, and rope, but it is also simply challenging and difficult hiking up steep rocky slopes, talus fields, and along airy ridges studded with outcroppings in the high mountains.