As part of C# 10 & .NET 6, it is now possible to contain all using statements in one central file. The benefits to doing this is that it frees up system resources, and avoids a spider web of using declarations.
As a result, all projects contain a GlobalDeclarations file in a directory named Globals. If you need to add a new using statement, please add it to the aforementioned file, while removing the unneeded statements from the source code file.
If a resource is only being used within one class itself, for example ContentAlignment, then you need to define it under the license header, as follows:
using ContentAlignment = System.Drawing.ContentAlignment;