From: Headquarters - New York
To: General Managers
Next Thursday at 10:30 Halley's Comet will appear over this area. This is an event which occurs only once every 75 years. Notify all directors and have them arrange for all employees to assemble on the Company lawn and inform them of the occurrence of this phenomenon. If it rains, cancel the day's observation and assemble in the auditorium to see a film about the comet.
From: General Manager
By order of the Executive Vice President, next Thursday at 10:30, Halley's Comet will appear over the Company lawn. If it rains, cancel the day's work and report to the auditorium with all employees where we will show films: a phenomenal event which occurs every 75 years.
To: All Department Chiefs
By order of the phenomenal Vice President, at 10:30 next Thursday, Halley's Comet will appear in the auditorium. In case of rain over the Company lawn, the Executive Vice President will give another order, something which occurs only every 75 years.
From: Department Chief
To: Section Chiefs
Next Thursday at 10:30 the Executive Vice President will appear in the auditorium with Halley's Comet, something which occurs every 75 years. If it rains, the Executive Vice President will cancel the comet and order us all out to our phenomenal Company lawn.
From: Section Chief
To: All EA's
When it rains next Thursday at 10:30 over the Company lawn, the phenomenal 75 year old Executive Vice President will cancel all work and appear before all employees in the auditorium accompanied by Bill Halley and his Comets.
[Ed: There are many variants of this.]