Consider carefully and decide to be beyond the tramline (5,3)
I believe the answer is:
'decide to be beyond the tramline' is the definition.
I can't judge whether this definition defines the answer.
'consider carefully' is the wordplay.
'consider' becomes 'think' (I've seen this before).
'carefully' becomes 'out' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'and' acts as a link.
Can you help me to learn more?