    deferred class
    	EV_TAB_CONTROLABLE_I

    General
    	cluster: implementation_mswin
    	description: "Eiffel Vision tab controlable. Implementation interface."
    	keywords: "select, selectable"

    Ancestors
    	EV_ANY_I*

    Queries
    	is_tabable_from: BOOLEAN
    	is_tabable_to: BOOLEAN

    Commands
    	disable_tabable_from
    	disable_tabable_to
    	enable_tabable_from
    	enable_tabable_to