Actually, every Unix has four editors. You forgot 'sed'.
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John M Chambers Phone: 617/364-2000x7304
Email: ...{adelie,bu-cs,harvax,inmet,mcsbos,mit-eddie,mot[bos]}!cdx39!{jc,news,root,usenet,uucp}
Smail: Codex Corporation; Mailstop C1-30; 20 Cabot Blvd; Mansfield MA 02048-1193
Volume-Number: Volume 9, Number 46