class
	HEADER

General
	cluster: mail
	description: "Objects that contains all the information relative to any header. Headers can only have email addresses informations."
	create: make_with_entries, make

Ancestors
	ANY

Queries
	entries: ARRAYED_LIST [STRING_8]
	multiple_entries: BOOLEAN
	unique_entry: STRING_8

Commands
	add_entries (list: ARRAY [STRING_8])
	add_entry (s: STRING_8)
	enable_contains_addresses
	enable_multiple_entries
	make (item: STRING_8)
	make_with_entries (list: ARRAY [STRING_8])
	remove_entry (entry: STRING_8)
	remove_i_th_entry (i: INTEGER_32)