A transcript is a retrospective written record of dialogue, and like a script (a prospective record) may include other scene information such as props or actions. In the case of a transcript of a film or television episode, ideally it is a verbatim record. Because closed-captioning is usually written separately, its text may have errors and does not necessarily reflect the true Canonical transcript.
Transcripts for Lost episodes up to and including "Enter 77" are based on the transcriptions by Lost-TV member Spooky with aid of DVR, and at times, closed captions for clarification. She and Lost-TV have generously granted us permission to share/host these transcripts at Lostpedia. Later transcripts were created by the Lostpedia community, unless stated otherwise below.
Disclaimer: This transcript is intended for educational and promotional purposes only, and may not be reproduced commercially without permission from ABC. The description contained herein represents viewers' secondhand experience of ABC's Lost.