nl_tokens: Creates a new Binding instance and makes it apply in a single direction . A one - way binding will relay changes on the from side object ( supplied as the from argument ) the to side but not the other way around . This means that if you change the to side directly the from side may have a different value .
pl_tokens: function ( from , flag ) { var C = this , binding = new C ( null , from ) ; return <mask> . oneWay ( flag ) ; }