High standards, but they may take a slide (6)
I believe the answer is:
ideals
'high standards' is the definition.
(I've seen this before)
'they may take a slide' is the wordplay.
'a slide' anagrams to 'IDEALS'.
However, I'm not clear how the anagram is indicated.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for ideals that I've seen before include "Models of perfection" , "Standards to aim for" , "'Perfect models, highest notions (6)'" , "Moral value" , "High standards for ladies" .)