nl_tokens: Parse quality str returning an object with . value and . quality .
pl_tokens: function quality ( str ) { var <mask> = str . split ( /  *; * / ) , val = parts [ 0 ] ; var q = parts [ 1 ] ? parseFloat ( parts [ 1 ] . split ( /  *= * / ) [ 1 ] ) : 1 ; return { value : val , quality : q } ; }