nl_tokens: Find word definition for given keyinfo object .
pl_tokens: function findWord ( keyinfo ) { var block = RECORD_BLOCK_TABLE . <mask> ( keyinfo . offset ) ; return _slice ( block . comp_offset , block . comp_size ) . exec ( read_definition , block , keyinfo ) . spread ( function ( definition ) { return resolve ( followLink ( definition , LOOKUP . mdx ) ) ; } ) ; }