Authorise small space for printer before heading (7)
I believe the answer is:
entitle
'authorise' is the definition.
(entitling is a kind of authorizing)
'small space for printer before heading' is the wordplay.
I cannot really understand how this works, but
'space' could be 'en' and 'en' is found within the answer.
'heading' could be 'title' (title is a kind of heading) and 'title' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for entitle that I've seen before include "Name; empower" , "Furnish with a right or claim" , "Name, authorise" , "Name; enable" , "Style; give right to" .)