“Xanadu Hypertext Documents” architecture and data structures, 2019 edition
I will never, ever again complain about the density of a W3C RFP:<p>&gt; The index space used by the granfilade is I-stream tumbler space. The wid of a granfilade crum is a tumbler specifying the span of I-space beneath the crum (i.e., the distance, in tumbler space, from the first to the last bottom crum descended from it). The widdative function is tumbler addition, therefore a crum’s wid is simply the tumbler sum of its children’s wids. Bottom crums have an implicit wid of 0.0.0.0.1 (i.e., spanning no nodes, no accounts, no orgls, no V-spaces and spanning a single atom). Granfilade disps are tumbler offsets in I-space from the parent crum.<p>Somehow I feel like Buckminster Fuller could have written this