What is default settings to reffer to file location in xcode project?

What is default settings to reffer to file location in xcode project ?

i have doubts between them

开发者_开发知识库

1. relative to build project
2. relative to project
3. relative to enclosing group
4. relative to source path
5. Absolute path

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This doesn't seem to be well documented. As I read "How Files are Referenced" in the "Xcode Project Management Guide":

1. If the file is in the project's folder, you get a reference relative to an enclosing group.
2. If the file is created by one of the targets, you get a reference relative to the build product.
3. Otherwise, I think, you get an absolute path.

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By default - Eclosing-Group*.

*Beginning Xcode (James Bucanek) Chapter 5, p.76