tech,1-5-P01-1007,ak | efficiency of <term> RCL parsers </term> . The <term> | non-deterministic parsing choices | </term> of the <term> main parser </term> for | #1701 The non-deterministic parsing choices of the main parser for a language L are directed by a guide which uses the shared derivation forest output by a prior RCL parser for a suitable superset of L . |