Jefferson Transcript Notation includes the following symbols:

Symbol	Name	Use
[text]	Brackets	Indicates the start and end points of overlapping speech.
=	Equal Sign	Indicates the break and subsequent continuation of a single utterance.
(# of seconds)	Timed Pause	A number in parenthesis indicates the time, in seconds, of a pause in speech.
(.)	Micropause	A brief pause, usually less than .2 seconds.
. or	Period or Down Arrow	Indicates falling pitch or intonation.
? or	Question Mark or Up Arrow	Indicates rising pitch or intonation.
,	Comma	Indicates a temporary rise or fall in intonation.
-	Hyphen	Indicates an abrupt hault or interuption in utterance.
>text<	Greater than/Less than symbols	Indicates that the enclosed speech was delivered more rapidly than usual for the speaker.
<text>	Less than/Greater than symbols	Indicates that the enclosed speech was delivered more slowly than usual for the speaker.
	Degree symbol	Indicates whisper, reduced volume, or quiet speech.
ALL CAPS	Capitalized text	Indicates shouted or increased volume in speech.
underline	Underlined speech	Indicates the speaker is emphasizing or stressing the speech.
:::	Colon or Colons	Indicates prolongation of sound.
(hhh)		Audible exhalation.
or (.hhh)	High Dot	Audible inhalation.
(text)	Parenthesis	Speech which is unclear or in doubt in the transcript.
((italic text))	Double Parenthesis	Annotation of non-verbal activity.

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Jefferson Transcipt Notation is described in G. Jefferson, Transcript Notation, in J. Heritage (eds),
Structures of Social Interaction, New York: Cambridge University Press, 1984.