Appendix VI Tumblers, their arithmetic and spans.

A span is a region of the system's information space. For the text version of the system, a span is a one-dimensional vector, with a starting address and a length. Spans do not have any data associated with them. To find the data that the span specifies, you use the retrieve request.

... resolution

spec doc 0.0.1 1.1 span + 0.100 start 1.1 ------- width 0.100 1.100 gives the first 100 characters of doc 0.0.1

spec doc 0.0.1 1.1 span + 1 start 1.1 ------ width 1 2 gives the entire text of doc 0.0.1

span doc 0.1.0.1 width 0.0.1 gives the ids of all of author 0.1's documents.

0.0.1 0.0.0.0.2 0.0.1 0.0.1.0.2 + 0.0.0.0.2 + 0.0.1 + 0.0.2 + 0.0.2.0.3 --------- --------- ----- --------- 0.0.1.0.2 0.0.1 0.0.3 0.0.3.0.3