Question: If I want to define a class in a common assembly, to be utilized by both a silverlight application and an asp.net web application or other type of app, can I define the data type in a standard class library or should I use a silverlight class library?

Answer: 
The `M2_HOME` environment variable for the global one. See [Settings Reference](http://maven.apache.org/settings.html):

> 
> The `settings` element in the
>  `settings.xml` file contains elements
>  used to define values which configure
>  Maven execution in various ways, like
>  the `pom.xml`, but should not be
>  bundled to any specific project, or
>  distributed to an audience. These
>  include values such as the local
>  repository location, alternate remote
>  repository servers, and authentication
>  information. There are two locations
>  where a settings.xml file may live:
> 
> 
> * The Maven install: `$M2_HOME/conf/settings.xml`
> * A user's install: `${user.home}/.m2/settings.xml`
> 
> 
>
If you are debugging and wasting time like me, this will give exact details including passwords. :P

```
mvn help:effective-settings -DshowPasswords=true

```