using the network to provide passenger and freight transportation services. Up until November 2010, company EDISY S.A. was the actual manager of the Greek national railway infrastructure until it became a subsidiary of OSE. Specifically on 29 November 2010 EDISY S.A. was merged back into the parent company OSE S.A., which is today the manager of the rail infrastructure of Greece. The major lines of the Greek railway network consist of the mostly electrified standard gauge double-track line from Athens to northern Greece-Thessaloniki, a single-track electrified line from Thessaloniki to Idomeni (at the border with North Macedonia) and the mixed-gauge line from Athens to Peloponnese. Almost all other lines link directly with these two lines. The main line of the Greek Railway System from Athens to Thessaloniki covers a distance of . According to the 2007 Network Statement, the total length of the standard gauge lines was approximately , while the length of the metre gauge lines (excluding Krioneri–Missolonghi–Agrinio line) is about . In addition, about of new standard gauge lines towards Athens Airport and to replace metre gauge lines became fully operational in July 2007. The backbone of railway network in called P.A.Th.E./P., which stands for Patras–Athens–Thessaloniki–Idomeni/Promachonas. Piraeus – Athens Central Station Piraeus is served by two terminals. One at Piraeus Harbour (Πειραιεύς Λιμήν, ), which up until 2006 was used by some standard gauge trains for Chalkis, Thessaloniki, and Alexandroupolis. The short line to Agios Ioannis Rentis is closed and, as of 2009, is being renovated. The heavy rolling stock repair works (Piraeus Central Factory, Κεντρικό Εργοστάσιο Πειραιώς – ΚΕΠ) are located at Lefka (), next to Ergostasio halt, and are accessible from this line. The other Piraeus mainline station (Peloponnese Station, ) was used by the Peloponesse metric line trains until 2005, when it was converted to standard gauge, reopening in 2007 and today serving the Proastiakos rail service. The two lines from Piraeus meet just outside Agios Ioannis Rentis (AIR) marshalling yard (). Next to the marshalling yard lies the major rolling stock depot and maintenance facility of OSE (MAI). North of AIR, the line crosses Kifissos River and then passes through the freight and parcels handling station of Rouf. At a siding of Rouf station, there is a "railway theatre" in disused rolling stock and a disused SEK class Μα "2-10-2" steam locomotive made by Breda (). The line between Rouf and Athens Central (Larissis