It is still considered good style to keep code-lines within a certain bound (e.g. 80 characters). IDEs like Eclipse offer to display a red guiding line at the chosen offset to help developers keep within this bound.
By modifying the registry a similar guide can be enabled for Visual Studio 2003 / 2005. Add a string value
Guides to the key (VS.NET 2005, VS 2003 has version 7.1)
Set the value to
To have multiple guides (like in the screenshot), add the additional columns space delimited, e.g.
RGB(128,0,0) 80 100
Ackn.: This information has been provided by Hannes Pavelka in Microsoft’s newsgroup microsoft.public.dotnet.languages.csharp, Message-ID: <email@example.com> (Article in Google Groups):