Frameset.isFrameLinkToFile property. Gets or sets a value indicating whether the web page or document file name specified in the [Frameset.frameDefaultUrl](../frameDefaultUrl/) property is an external resource the frame is linked with....Frameset.isFrameLinkToFile property. Gets or sets a value indicating whether the web page or document file name specified in the [Frameset.frameDefaultUrl](../frameDefaultUrl/) property is an external resource the frame is linked with.