There was no on-screen explanation as to when Hawk became the leader.

It was originally conceived that the character of Captain Scarlet would be revived by artificial means (an advanced computer) rather than returning to life naturally and with no on-screen explanation.

He also suggests that the large amount of on-screen textual explanation can be associated with the film crew's ineptitude in storytelling.

No on-screen explanations were offered for the cast changes.

As a printed, on-screen explanation reveals at the film's end, after Diana's death her illness was diagnosed as chronic fatigue and immune dysfunction syndrome.

The on-screen explanation was that his smiling Jamaican gimmick paid tribute to Jamaican culture.

The operating system interacted with the user through a series of prompts with automatic on-screen explanations and default selections, probably the ultimate user-friendliness achievable in text-only human-computer interaction.

However, in the eighth season, Gabe is back in the Scranton office without any on-screen explanation.

There is no on-screen explanation of the reasons for the different incubation times.

When the finale was broadcast, there was no on-screen explanation for how one character's death was undone.