ios - What do you call the first item in Navigator area of Xcode? -

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when communicating other people have refer first blue (root) item of project navigators content area (see image below, in case item has name adventure).

is there official name item? if not how refer it? people refer "the blue project file icon in project navigator", there not better or more succinct name?

enter image description here

that called project navigator.

lorem


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