nl_tokens: 设置 Editor . md 的主题 Setting Editor . md theme
pl_tokens: function ( theme ) { var preview = this . preview ; var oldTheme = this . settings . previewTheme ; var themePrefix = this . classPrefix + "preview-theme-" ; preview . removeClass ( themePrefix + oldTheme ) . addClass ( themePrefix + theme ) ; this . <mask> . previewTheme = theme ; return this ; }