All steps and procedures in the clerk's office touching the filing of pleadings and the maturing of suits or actions may be reviewed and corrected by the court.
The time allowed for filing pleadings may be extended by the court in its discretion and such extension may be granted although the time fixed already has expired; but the time fixed for the filing of a motion challenging the venue will in no case be extended except to the extent permitted by § 8.01-264.
Va. Sup. Ct. 1:9