. . . "1973" . . "Computer graphics--Computer programs"@en . . "Computer graphics--Computer programs"@en . . "Xerox, Palo Alto Research Center" . . . . "2018-03-11" . . . "Sproull" . "Robert F." . "Robert F. Sproull" . . "Palo Alto, CA" . . "Xerox Corporation. Palo Alto Research Center." . . "cau" . "1973" . "Omnigraph : simple terminal-independent graphics software"@en . "16841735" . "16841735" . . . . . . . "en" . . . . . . . .