Revolutionary design for a tram (5)

I believe the answer is:

marat

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'revolutionary' is the definition.
(French revolutionary Jean-Paul Marat)

'design for a tram' is the wordplay.
'a tram' anagrams to 'MARAT'.
However, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for marat that I've seen before include "Jean Paul, French revolutionary, murdered in his bath" , "French revolutionary killed in his bath" , "Charlotte Corday victim" , "French revolutionary killed by Charlotte Corday" , "Revolutionary leader" .)

I've seen this clue in the Evening Standard.

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