Final answer:
It is true that General Project Properties apply to all project configurations and these settings are generally found in a unified properties window within an IDE.
Step-by-step explanation:
Project properties are an advanced mechanism for modifying the behavior of a project that contains Mathematica material. They can be set on any type of project. The statement that General Project Properties are applicable to all project configurations and are set in the properties window is true.
In software development, when working with integrated development environments (IDEs) like Visual Studio or Eclipse, the properties window allows developers to set configurations that apply to the entire project regardless of the build configuration.
These include settings such as the project name, output type, target framework, and assembly information, among others. While some settings can be overridden at the configuration level (like debug or release), general properties typically apply across the board.