    class
    	HTML_PAGE

    General
    	cluster: html
    	description: "Class which contains the information relative to an html page."
    	create: make_from_template, make

    Ancestors
    	ANY

    Queries
    	out: STRING_8

    Commands
    	add_html_code (s: STRING_8)
    	insert_hidden_field (name, value: STRING_8)
    	make
    	make_from_template (fi_n: STRING_8)
    	replace_marker (a_marker, s: STRING_8)

    Constraints
    	page exists