Playground

import System;

public class Vault
{
	i32 code = 42;              // private: before any label

	public:
		Peek(Vault other) : i32 => other.code;

	inherited:
		i32 Level = 3;

	friendly:
		i32 Shared = 5;

	file:
		i32 Local = 6;
		public i32 Open = 7;    // the word on the member wins
}

public class BigVault : Vault
{
	public:
		Show() : i32 => Level;  // inherited: visible here
}

[FriendOf(Vault)]
public class Auditor
{
	public:
		Check(Vault v) : i32 => v.Shared;   // friendly: Auditor is a friend
}

Main()
{
	Vault v = new Vault();
	Console.WriteLine(v.Peek(v) + new BigVault().Show() + new Auditor().Check(v) + v.Local + v.Open);
}