When the most important/new information is placed at the end. May delay the mention of the subject, building suspense.
EXAMPLE:
End-focused: In rushed two doctors, completely smothered in blood, awkwardly carried a third person, who appeared to be unconscious.
Not end-focused: Three doctors, completely smothered in blood, with two of them awkwardly carrying a third person, who appeared to be unconscious, rushed in.
\[The long, complex noun phrase is fronted, which delays the mention of the verb and makes the sentence appear clumsy.\]
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NOTE: English typically follows subject/verb/object/complement