Greek papers featuring in network (4)
I believe the answer is:
grid
'network' is the definition.
(grid is a kind of network)
'greek papers' is the wordplay.
'greek' becomes 'gr' (abbreviation for Greek).
'papers' becomes 'ID' (identification papers).
'gr'+'id'='GRID'
'featuring in' acts as a link.
(Other definitions for grid that I've seen before include "F1 starting point" , "Regular pattern of horizontal and vertical lines" , "Grating of parallel bars" , "this 15x15 space?" , "entries in this" .)