An order of court is binding, sacrosanct, and immutable. It cannot be varied or sidelined by parties through agreement between themselves without the involvement and approval of the court that made the order. Parties who wish to vary a court order must approach the court and move it to vary its own order. Where parties act outside the terms of an extant court order, they act in contempt of court. Where both parties to litigation fail to comply with a court order prescribing timelines for filing procedural documents (such as Heads of Argument), both parties are barred and their papers are improperly before the court, rendering the application incurably defective. In such circumstances, neither party can be heard until proper applications for condonation and upliftment of the bar are made and granted. Legal practitioners, as officers of the court, are presumed to know the law and are expected to comply with court orders; their failure to do so cannot be excused on the basis of inter partes agreements that contradict court directions.