O

Official Firefox Support Site, Help Documentation Available at, 172

Offline mode, using, 305-306

ongoing downloads, capabilities with, 149

online advertising, blocking, 287.

See also popup advertising

online help, 172

Open File command (File menu), 303

Open Location command (File menu), 302-303

Open Source Articles Web site, help documentation available at, 172

open source development model

Firefox and, 16-17

origins of, 9

Open Web Location window, opening, 302-303

options, advantage of reducing, 215

Options command (Tools menu), 319

Options window

Advanced category, 225-228

clearing long-term history from, 85

Content category, 221-223

Downloads category, 224-225

General category, 218-219

Privacy category, 220-221

Tabs category, 223

using, 217-218

organizing, bookmarks, 64, 68-73

orientation, changing Web page for printing, 158-159