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Version of a simple and cute set of messages for the future (4,7)

Ross

I believe the answer is:

time capsule

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'set of messages for the future' is the definition.
I can't tell whether this definition defines the answer.

'version of a simple and cute' is the wordplay.
'version of' indicates anagramming the letters.
'and' says to put letters next to each other (I've seen this in other clues).
'a'+'simple'='asimple'
'asimple' after 'cute' is 'cuteasimple'.
'cuteasimple' with letters rearranged gives 'TIME CAPSULE'.

Can you help me to learn more?

(Other definitions for time capsule that I've seen before include "Record for posterity" , "Container laid down for future" , "Container buried with items to be discovered in the far future" , "Box buried today to be found some time in the future" .)

I've seen this clue in The Times.
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