The TOPS-20 operating system by DEC - the second proprietary OS for the PDP-10 - preferred by most PDP-10 hackers over TOPS-10 (that is, by those who were not ITS or WAITS partisans). TOPS-20 began in 1969 as Bolt, Beranek and Newman's TENEX operating system, using special paging hardware. The system is entirely unrelated to the similarily-named TOPS-10.

GoldBamboo

... GUANFACINE (Tenex®) is an antihypertensive. Guanfacine relaxes blood vessels, relieving high blood pressure (hypertension). It is not a cure and must be taken regularly to prevent complications of uncontrolled blood pressure. Untreated high blood pressure can cause a stroke, heart failure, or damage to your kidneys. Generic guanfacine tablets are available. ...
Drug Digest - more...

Guanfacine Systematic (IUPAC) name N-(diaminomethylidene)-2-(2,6- ...
Wikipedia - [full article]

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