A way for an Agile team to collaboratively schedule its EngineeringTask''''''s.

I first encountered the string-and-paper wall-gantt in Manzo's 2002
http://www.stsc.hill.af.mil/crossTalk/2002/10/manzo.html (in CrossTalk magazine, of all things!). There are photos of it on slides 47-48 of http://sunset.usc.edu/events/2003/March_2003/Agile_Methods_Perspective_ARR_John_Manzo.pdf

A Google search also turns up
http://hyperthink.net/blog/default,date,2003-11-29.aspx, though I didn't find pictures there.

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See also: AgileGantt