Server-side trial calculation for the working-pair library. Select a pair in the tree; the view groups the library's functions by their inputs — one box per input set — and every output line is one library function, computed on the server by the library's JavaScript set (libr_water.js) under that function's own fitted range: outside its range a line reports the range and returns no number. Pairs marked “coming soon” are listed for completeness and are not yet computable.