For instance, all wrong about being within the law (5)
I believe the answer is:
legal
'within the law' is the definition.
(I've seen this in another clue)
'for instance all wrong about' is the wordplay.
'for instance' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'wrong' is an anagram indicator.
'about' indicates putting letters inside.
'all' with letters rearranged gives 'lal'.
'eg' going into 'lal' is 'LEGAL'.
'being' acts as a link.
(Other definitions for legal that I've seen before include "It's acceptable" , "In accordance with statute" , "Permissible" , "Like some tender" , "Conforming with the law" .)