What is the significance of a source folder/directory with a .tproj suffix?

What is the significance of a source f开发者_如何学Goolder/directory with a .tproj suffix ?

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.tproj is a Trinity Project file. Trinity is now called Graph Engine however.

You can open them in Visual Studio after installing the Graph Engine VSExtension

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Project Builder, which was the IDE for NeXTStep, OPENSTEP, and Mac OS X that later became Xcode, used to have the concept of a "tool project", for which it would make a .tproj folder. So I believe in the concept of Mac shell utilities, you're looking at something that's similar in concept to a .xcodeproj.