[300,70] contains Force (FRC) and 'Detach', both for RSX-11M/PLUS V2.1.

Force is a program that will force characters to another keyboard.

'Detach' is a patch that will enable users to reconnect to a task 
after a modem hangup.

Frank Penner
G.D. Searle & Co.
4901 Searle Parkway
Skokie, Illinois 60077
(312) 982-8231
