What is the foo.1 file that Xcode creates in the command line tool?

Question

When I create a new Xcode project using the command line tool template, Xcode automatically adds a file with the extension “.1” (for example, Car.1 and main.m). What is the .1 file?

Answer 1

This is the source file for the manpage of the new command line if you want to provide it. Usually you do not do this, so you can safely remove it.