While You Were Sleeping Issue 4 is a graffiti magazine centred on the world of train writing and late-night yard missions, documenting writers painting metros and commuter trains across Europe and other international systems. The issue is built around raw photography showing panels, wholecars, and station shots, capturing the atmosphere of crews working through the night while cities are quiet and trains sit in depots.

The magazine follows the underground graffiti zine tradition with very little text and dense photo spreads that move quickly from one system to another. Readers see sequences of train productions, tags layered through tunnels and platforms, and occasional wall pieces that reflect the travelling culture of writers chasing steel across borders. Issue 4 preserves another slice of the international train scene, freezing moments that usually vanish once the trains roll back into service.