All intelligent creatures on Zalanthas are able to use psionics (often called the Way or the Way of the Mind) to some degree. Psionic powers enable people to communicate across vast distances, track people and animals, and barricade their minds against intrusion. Non-psionic races are long since deceased on Zalanthas, not having been able to compete with those who possessed the ability.
There are two varieties of psionic powers: sustained and immediate. Sustained psionics are those powers which remain 'turned on' until stopped, and immediate powers are those which have an instant effect.
Once psionic contact has been established, it is possible to send thoughts directly to the person with whom your character's mind is linked. This is done with the psi command, which operates like say (q.v.) but has no requirements of distance or specification of target (since characters can only maintain psionic contact with one other character at a time).