With attribute filters you can exclude from coverage entities marked with the specific attributes from the coverage analysis.
Filters are applied to assemblies, modules, classes and functions.
You can explicitly specify module, where attribute located like this:
Syntax in the attribute filter editor is the following:
attribute
where attribute is a fully qualified attribute type name.
Or
[module]attribute
If a filter you entered does not ends with 'Attribute' - a new filter with such extension will be added implicitly.in case if you'd like to provide explicit specification of the module where attribute type is located