![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/43/Test_Template_Info-Icon_-_Version_%282%29.svg/50px-Test_Template_Info-Icon_-_Version_%282%29.svg.png)
This is a route-map template for the RER B, a regional rapid transit line in France.
- For a key to symbols, see {{railway line legend}}.
- For information on using this template, see Template:Routemap.
- For pictograms used, see Commons:BSicon/Catalogue.
Note: Per consensus and convention, most route-map templates are used in a single article in order to separate their complex and fragile syntax from normal article wikitext. See this discussion for more information.