How do I create subcategories for Lines within the project?

[Curtis Ridenour]

I am creating single line diagrams on drafting views in Revit 2013. I have 40 different SLD line styles in my project because of this.

Is there a way to create a subcategory within the Model Categories tab of the Visibility Graphics window that would collapse all of the SLD line styles so I don't have to scroll through all 40 when I am not working on the single line diagram?

[david_peterson]

I don't believe so. Lines is the category, and the line style is the sub category, so NO I don't believe it's possible.
At least that's my take on it.