iphone - Difference between code signing target and project -

I have seen that I can set both entitlements and code signing settings in Xcode:

• Double click on the project (group and file in the top item, which has the name of the project)
• Goal (under the target, double click on your project name)

What is the difference between these two? I know that with the header path, goes to override each other (without any warning ...).

Target settings override project settings Project settings are valid for all targets, where the settings have not been overridden.