(#5543) Context-based templates can now trigger on your build preview:
Context-based templates no longer rely solely on the context of the mouse. With this change, they can also use the build preview as context to cycle through templates. For instance, if you have a Tech 2 Radar in the build preview, you can cycle to a build template that surrounds the radar with power generators. Similarly, if a Tech 3 Power Generator is in the build preview, you can switch to a build template that surrounds the power generator with air factories. These new templates can be edited, extended, or replaced just like the old ones.
What does "build preview" mean? Does that mean if I select a structure to build and have it on my cursor but have not place a build order yet?