Ключевые слова: accident, alarm, alert, attention, bankruptcy, beware, business, businessman, careful, caution, computing, cyberspace, dangerous, depression, error, exclamation, fail, hazard, important, information, laptop, maintenance, mark, message, network, note, notice, page, problem, process, program, protection, render, repair, risk, security, service, sign, software, solution, stop, support, symbol, system, technical, technology, trouble, warning, web,