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.
The intuitive purpose for a landingâs existence would be to provide a safe place for a person to complete an ascent or descent of a stairway. To this end, IRC Section R311.7.6 limits the slope of the walking surface of a landing to a maximum of 1/4 inch of rise for 12 inches of horizontal distance (Figure 1).