A ForwardLink that is not an InlineLink. For instance, the MeatballLogo to your right (if you are graphics enabled) is an OutOfLineLink as it does not flow with the main content on this page.
On the WorldWideWeb, it is common practice to create a list of OutOfLineLinks on a sort of "sidebar" to help navigate the site.
Actually, it can be debated whether either of those examples are truly "out of line." To be truly out of line, the links should absolutely incapable of interacting with the content. HyperWave does this.