The dashed line in use

"I\'ve had trouble justifying my excitement about this intricate visual detail, so I thought it would be good to collect a bunch of examples from over fifty years of information design history, to show it as a powerful visual element in ubicomp situations.

Even though the dashed line has emerged from a designer\'s shorthand and from the limitations of monotone printing techniques, it has a clear and simple visual magic, the ability to express something three- or four-dimensional in two dimensions." (Thanks Stephen!)

Note: XPLANE founder Dave Gray is quoted in the post, which features an XPLANATiON worked on by yours truly!