Pleased legal document includes help for navigating obscure passages? (9)
I believe the answer is:
delighted
'pleased' is the definition.
('delight' can be a synonym of 'please')
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for delighted that I've seen before include "Greatly pleased" , "Overjoyed" , "Pleased as Punch" , "Over the moon" , "Joyful" .)