1. single tilde is used to represent the friction of the air passing through a narrow opening in the oral cavity in the articulation of the alveolar fricative.
  2. As the perceived amount of friction is higher in the articulation of a palatal fricative, a double tilde is used.
  3. single tilde is also used to represent the friction caused by a narrowing of the glottis in the articulation of the glottal fricative. In this case, the tilde is placed inside a circle which represents the throat
  4. As a general rule, fricative shapes are smaller than stops shapes, in consonance with the perception that fricatives are perceptually lighter than stops.
  5. The tilde also points to the notion of movement, perceptually present in the articulation of the fricative sounds. 
  6. In the dental fricatives,  open squares resembling teeth are used to represent the place of articulation where the friction is produced.

Liquids

Finally, uniskript represents the liquid consonants using lines depicting the movement of the tongue. In the articulation of the liquids, the tongue produces a partial occlusion in the oral cavity, resulting in a resonant vowel-like sound. The articulation of the liquids is considered displaced because the articulator changes its neutral configuration.