For example, the capitalisation in revolutionAry fIsh? (3,7)
I believe the answer is:
red herring
'for example the capitalisation' is the definition.
I can't judge whether this definition defines the answer.
'revolutionary fish?' is the wordplay.
'revolutionary' becomes 'red' (informal term for communist).
'fish?' becomes 'herring' (herring is a type of fish).
'red'+'herring'='RED HERRING'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for red herring that I've seen before include "False lead" , "Diversion intended to distract attention from the main issue" , "food?" , "Misleading clue" , "What distracts" .)