How can I add using statements in c#?

[tone]

What do I need to add to a class in the EA model in order to generate a using (imports) statement in c#?  I have tried reverse engineering a class with a using statement but do not see the using statement i added in the EA model.

[Eve]

Using statements are generated from usages of classes (as attribute classifiers etc.)

To generate using statements for classes not in your model they can be specified in the code generation dialog (for a single class).

[tone]

ok i see.  Seems to work fine.  Is there any way to apply a single using/imports to multiple classes at once?

[VGermscheid]

I did this by changing the Import template so that common includes (e.g. using System;, etc.) get added to every class.

ok i see.  Seems to work fine.  Is there any way to apply a single using/imports to multiple classes at once?