Crossword Genius

Ten lasers focused attention (9)

Ross

I believe the answer is:

alertness

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

'attention' is the definition.
(I know that alertness is a type of attention)

'ten lasers focused' is the wordplay.
'ten lasers' anagrams to 'ALERTNESS'.
But, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for alertness that I've seen before include "It's needed to respond quickly to danger" , "Wakeful characteristic" , "Watchful state" , "State of vigilance and watchfulness" , "Watchful attitude" .)

I've seen this clue in The Mirror.
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