string stringOf(Permission p)
{
	string str = ""
	
	if (p == none)
	{
		return("None")
	}
	else
	{
		if (p & read != none)
		{
			str = str "R"
		}
	
		if (p & modify != none)
		{
			str = str "M"
		}
	
		if (p & create != none)
		{
			str = str "C"
		}
		
		if (p & delete != none)
		{
			str = str "D"
		}
		
		if (p & control != none)
		{
			str = str "A"
		}
	}
	
	return(str)
}