This document discusses secondary articulation, lenition, and linking in connected speech. It defines velarization and aspiration as types of secondary articulation. It explains consonant lenition as the reduction in constriction, voicing, or duration of consonants. Examples given are flapping of /t/ and /d/ in American English. The document also outlines rules of linking words together, such as linking identical final and initial consonants, intrusive /r/, and intrusive /j/ and /w/ between vowels.