Jackie (magazine) especially if the story involved a "reader's true life experience". Both the comics and the short stories invariably dealt with either romance or family issues. The centre pages of the magazine usually contained a pull-out poster of a popular band or film star. The magazine featured a section called "Silly Star File", a humorous interview with figures from the world of pop music. "Jackie" became very popular with young teenage girls, not least because of the "Cathy and Claire" problem page, which received 400 reader letters a week and dealt with controversial issues that were nonetheless relevant to the readership.
Feature interaction problem neither feature is activated by the first call, there is no noticeable problem. When a second call arrives before the first has terminated, the telephone system has a decision to make: whether the call should be forwarded to the secondary number (call forwarding) or the person who answered the first call should be notified that another call has arrived (call waiting). Since this decision has no obvious correct answer, the optimal answer depends on the needs of the customer. This "feature interaction" is a specific example of a general and common problem that has become prevalent due to increasing system