hh | Hearable aspiration (breathing) is shown where it occurs in the talk by the letter “h” — the more h’s, the more aspiration. The aspiration may represent breathing, laughter, etc. |
(h) | If it occurs inside the boundaries of a word, it may be enclosed in parentheses in order to set it apart from the sounds of the word. |
.hh | If the aspiration is an inhalation, it is shown with a dot before it (sometimes a raised dot). |
Within a word

Laughter

Inhalation
