nl_tokens: Renders the verb selector : shows the msot popular verbs with option to show / hide each one .
pl_tokens: function renderVerbs ( verbs ) { // For each new verb we add an LI and inside a link to show/hide and a span // to show the color-coded verb name. var list = d3 . select ( "#verbs" ) , selection = list . selectAll ( "li" ) . data ( verbs ) , li = <mask> . enter ( ) . append ( "li" ) ; li . append ( "a" ) . attr ( "class" , "show" ) . on ( "click" , function ( verb ) { d3 . event . stopPropagation ( ) ; // If the class is "show", we're showing the verb. Flip class to hide // and turn verbsShowing off. if ( this . className == "show" ) { this . className = "hide" ; verbsShowing [ verb ] = false ; } else { this . className = "show" ; verbsShowing [ verb ] = true ; } // Update all activities accordingly. renderActivities ( ) ; return false ; } ) ; li . append ( "span" ) . text ( String ) . style ( "background-color" , function ( verb ) { return verbColor ( verbs , verb ) } ) ; selection . exit ( ) . remove ( ) ; }