Writer pens outline of script in café (6)
I believe the answer is:
bistro
'cafe' is the definition.
(I've seen this in another clue)
'writer pens outline of script' is the wordplay.
'writer' becomes 'biro' (type of pen, something which writes).
'pens' is an insertion indicator (inserted letters are held or penned in).
'outline of' says to hollow out the word (remove centre letters) (outline refers to the letters on the edges).
'script' with its middle taken out is 'st'.
'biro' placed around 'st' is 'BISTRO'.
'in' acts as a link.
(Other definitions for bistro that I've seen before include "Small informal French restaurant" , "Small restaurant - robs it (anag)" , "Small inexpensive eatery" , "Small bar-cum-restaurant" , "Cafe/restaurant" .)