Put on record (8)
'put on record' is the definition.
(synonyms)
'put on' is the wordplay.
I cannot quite see how this works, but
'on' could be 're' (regarding) and 're' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for register that I've seen before include "Written record of names, etc" , "Show" , "To express" , "Annals" , "Official record of names, transactions" .)
This clue might be a double definition.
'put' is the first definition.
The definition and answer can be both related to thinking as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'record' is the second definition.
(documenting is a kind of recording)
'on' acts as a link.
Can you help me to learn more?
(Other definitions for document that I've seen before include "Piece of written matter" , "Paper, form" , "Will, for example" , "Written statement" , "Official paper" .)