expand_less Data and scape engine operators. 
Data engine creates forms of memory specificed by a "word-spec" 
The data engine is the "memory" of the ceptr VM, it's just that there are lots of types of memory, not just RAM accessible by word-sized int.  Instead the machine "word" can be semantic structures, stored natively.
Sort/Limit are kinds of meta-geometry functions on scapes
Geometry functions from spreadsheet, (structural and contextual): existance, isometric maps, next/prev,  orderded, bounded, linearity, rotational, continuous vs stepped, tree, etc..
 
Find: search on data that's allready scaped so it can be retrieved via random access
Match: requires iteration and processing.