By means of the telekinesis spell, the caster is able to move objects by concentrating on moving them mentally. The spell can provide either a gentle, sustained force or a single short, violent thrust.
A sustained force enables the caster to move a small amount of weight. The weight can be moved vertically, horizontally, or both. The object can be telekinetically manipulated as if with one hand. For example, a lever or rope can be pulled, a key can be turned, an object rotated and so on, if the force required is within the weight limitation.
Alternatively, the caster can hurl one or more objects -- or opponents, if they are small enough -- within range, and within a 10-foot cube, directly away from himself at high speed.
Note: The telekinesis spell originally appeared in this form in the 2nd Edition Player's Handbook, while its psionic counterpart did the same in the Complete Psionicist's Handbook, both for the AD&D game from TSR. Its use here is for the purposes of providing context for the campaign only.