A more thorough explanation:

si non omnes

Si non omnes is a legal term that means "if not all". It refers to a writ that allows two or more judges to proceed with a case if the entire commission cannot be present on the assigned day.

For example, if a case is scheduled to be heard by a panel of three judges, but one of them is unable to attend due to illness or other reasons, the remaining judges can proceed with the case using the si non omnes writ.

Another example would be if a judge has a conflict of interest in a case and cannot participate, the remaining judges can use the si non omnes writ to proceed without that judge.

These examples illustrate how the si non omnes writ allows legal proceedings to continue even if all parties cannot be present, ensuring that justice is still served.