Crossword Genius

Pal I recruit to arrange something on a wall (7,4)

Ross

I believe the answer is:

picture rail

I'm a little stuck... Click here to teach me more about this clue!

'something on a wall' is the definition.
I can't tell whether this definition defines the answer.

'pal i recruit to arrange' is the wordplay.
'to arrange' indicates an anagram.
'pal'+'i'+'recruit'='palirecruit'
'palirecruit' is an anagram of 'PICTURE RAIL'.

Can you help me to learn more?

(Another definition for picture rail that I've seen is " Strip of wood for hanging works of art".)

I've seen this clue in The Times.
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