Usage    is used to create an infobox on articles about railway ;  is the only mandatory parameter.   is used for railway ; this template is sometimes used on articles about both a company and a line (e.g. Romney, Hythe and Dymchurch Railway). It may also be used on affiliate companies operating rail public transit systems under contract (e.g. Arriva Rail London).   Syntax  {{Infobox rail | name             =  | other_name       =  | logo             =  | logo_size        =  | logo_alt         =  | system_map       =  | map_size         =  | map_alt          =  | map_caption      =  | image            =  | image_size       =  | alt              =  | caption          =  | franchise        =  | nameforarea      =  | regions          =  | secregions       =  | fleet            =  | stations         =  | stationsop       =  | parent_company   =  | headquarters     =  | founders         =  | key_people       =  | marks            =  | locale           =  | start_year       = <!-- {{Start date|YYYY}} --> | end_year         = <!-- For currently operating lines, use "present". For defunct lines, use {{End date|YYYY}} --> | predecessor_line = <!-- "predecessors" can also be used; will make label plural. --> | successor_line   = <!-- "successors" can also be used; will make label plural. --> | gauge            = <!-- {{Track gauge|Standard gauge}} --> | old_gauge        =  | electrification  =  | length           =  | tracklength      =  | notrack          =  | speed            =  | elevation        =  | website          = <!-- {{URL|example.com}} --> | embedded         =  | map              =  | map_state        =  | map_name         =  }}  Parameters  Parameter  Required  Definition name  Yes  Name of railway company, displayed at top of infobox railroad_name  No  Another version of name, with the same effect. Name and railroad name may not be used at the same time. other_name  No  Other name(s) that the railway company is or was known by.  logo  No  Filename of logo image, without File: prefix. Shown just below the railroad name logo_size  No  Size of image in pixels with px, default is upright=0.91 (see Wikipedia:Picture tutorial#Upright images) logo_alt  No  Alt text for logo, used by screen readers. See Wikipedia:Alternative text for images for more information. system_map  No   Filename of system map image, without File: prefix, displayed below the logo. map_caption  No  Caption for system map image map_size  No  Size of image in pixels with px, default is upright=1.41 map_alt  No  Alt text for map image  No  Filename of image, without File: prefix, displayed below the map image_size  No  Size of image in pixels with px, default is upright=1.41 image_caption  No  Image caption image_alt  No  Alt text for image franchise  No  For passenger operators: The name of the operating franchise the company operates under. Open access operators may be represented as "Not subject to franchising or subsidy". Railfreight companies may leave this parameter blank. contract  No  For passenger operators: The name of the operating contract the company operates under.  concession  No  For passenger operators: The name of the operating concession the company operates under.  regions  No  The primary region the railway operates in. For a more specific route or station, use nameforarea parameter secregions  No  The secondary regions the railway serves nameforarea  No  May be used in lieu of regions or secregions fleet  No  Details about the rolling stock, and where possible, any stock on order stations  No  For passenger companies: The total number of stations served stationsop  No  Number of stations the railway acts as property manager for, whether in a de jure or de facto status. parent_company  No  The shareholders in the company, in some cases, the owner. Leave blank if owner is an individual person. headquarters  No  The city where the railway's main office is located.  founders  No  Important founders of the company; use  for multiple entries key_people  No  Current executives of the company; use  for multiple entries marks  No  The reporting mark.  The definition may be:  UIC: a two to five letter identifier displayed on the vehicles where applicable, often an acronym of the railway's legal name.  AAR: a two to four letter code for the railway, often an acronym of the railway's trade name.  NR: The two letter code used by passenger operators in daily operation   Other: Abbreviation of individual rolling stock lessors. abbr  No  Another version of marks, with the same effect. Abbr and marks may not be used at the same time. locale  No  Region railway is located, typically a bioregion. Used primarily for freight railways. start_year  No  Year railway commenced operations, if exact date is known use  template, Using df=y parameter to display in day month year format if appropriate. Shown as Dates of operation end_year  No  Year railway ceased operations, if exact date is known, use  template. If currently operating, type "present". Shown as Dates of operation. predecessor_line  No  The definition may be:  A list of companies that were merged to make up this company  The preceding operator of a contracted service successor_line  No  Subsequent railway company that operated the company's railway lines predecessor  No  Another version of predecessor_line, with the same effect. successor  No  Another version of successor_line, with the same effect. successors  No  Similar to successor, but used when a company has more than one successor (e.g. Conrail). gauge  No  Current track gauge (use template ) old_gauge  No  Previous rail gauge (use template ), shown as Previous gauge electrification  No  Type and voltage of electrification system. Leave blank if no electrification exists. length  No  Total length of the railway system speed  No  Maximum operating speed of the railway's services, and where possible, the service type in parentheses. website  No  Official website, use  template. operator  No  For defunct companies, the current company or companies operating the former company's lines. notrack  No  The number of tracks on the company's main line.  Embedding other infoboxes The embedded= parameter can be used to embed another infobox with such capability like  and .  Examples  Usage  Code  Example Minimum use  {{Infobox rail | name = Isle of Sodor Railway }}   Logo  {{Infobox rail | name = Isle of Sodor Railway | logo = No-photo.svg | logo_size = 300px }}   Image  {{Infobox rail | name          = [[Great North of Scotland Railway]] | image         = Gordon Highlander steam locomotive.jpg | image_size    = 300px | image_caption = No. 49 ''Gordon Highlander'', built   for the [[Great North of Scotland Railway]] in 1920 }}   Text {{Infobox rail | name             = [[Great North of Scotland Railway]] | marks            = FGW | locale           = North Scotland | start_year       = {{Start date|1906|5|12}} | end_year         = {{End date|1923|1|20}} | predecessor_line =  | successor_line   = [[London and North Eastern Railway]] | gauge            = {{Track gauge|56.5in|allk=on}} | old_gauge        = {{Track gauge|42in|lk=on}} | electrification  = 650 [[Volt|V]] [[Direct current|DC]] | length           = {{convert|50|mi}} | hq_city          = N/A | website          = N/A }}   Nearly everything {{Infobox rail | name             = [[Great North of Scotland Railway]] | other_name       =  | logo             = No-photo.svg | system_map       = Temporary placeholder photo.jpg | image            = Gordon Highlander steam locomotive.jpg | image_size       = 300px | image_caption    = No. 49 ''Gordon Highlander'', built  for the [[Great North of Scotland Railway]] in 1920 | marks            = FGW | locale           = North Scotland | start_year       = {{Start date|1906|5|12}} | end_year         = {{End date|1923|1|20}} | predecessor_line =  | successor_line   = [[London and North Eastern Railway]] | gauge            = {{Track gauge|56.5in|allk=on}} | old_gauge        = {{Track gauge|42in|lk=on}} | electrification  = 650 [[Volt|V]] [[Direct current|DC]] | length           = {{convert|50|mi}} | hq_city          = N/A | website          = N/A }}   নজরকারী বিষয়শ্রেণী