Alexander III once wrote a warrant condemning a prisoner to transportation:

PARDON IMPOSSIBLE, TO BE SENT TO SIBERIA.

The man appealed to the czar’s wife, who transposed the comma:

PARDON, IMPOSSIBLE TO BE SENT TO SIBERIA.

The prisoner was released.

The actress Minnie Maddern Fiske once found this message attached to the mirror in her dressing room:

MARGARET ANGLIN SAYS MRS. FISKE IS THE BEST ACTRESS IN AMERICA.

She returned it to Anglin, who found she had added two commas:

MARGARET ANGLIN, SAYS MRS. FISKE, IS THE BEST ACTRESS IN AMERICA.