Detail #109: A Preposition Trick

Mark focus or topic marking for preposition phrases by reduplication of the preposition in sentence-initial position:

in I told you he's in London!
with he does his job with pride. 

Obviously this benefits from a language with case marking, so that nouns that happen to follow the reduplicated preposition are not mistakenly parsed as complements - or at least that the likelihood for such misparsing is reduced.