    deferred class
    	EV_HELP_CONTEXTABLE

    General
    	cluster: interface
    	description: "Abstraction for objects that support active help contexts."
    	keywords: "help"

    Ancestors
    	EV_ANY*

    Queries
    	data: ANY
    	help_context: FUNCTION [ANY, TUPLE, EV_HELP_CONTEXT]
    	is_destroyed: BOOLEAN

    Commands
    	copy (other: [like Current] EV_HELP_CONTEXTABLE)
    	destroy
    	remove_help_context
    	set_data (some_data: [like data] ANY)
    	set_help_context (an_help_context: [like help_context] FUNCTION [ANY, TUPLE, EV_HELP_CONTEXT])