anchor.diff:      along with this program.  If not, see <http://www.gnu.org/licenses/>.
   *)
   
  -// conn = open
  -//
   // cmd_ prefix
   //
  -// lsof problem, funk not called?
  +// funk never gets called when the client abandons a cursor.  time it out.
   //
   // figure out why none of the parallel shell things work
   //
  
positive.code: //
  // should find and aggregate share their implementation of projection?
  // 
  // break up Storage.fs.  move sqlite-specific stuff down a layer.
  //
  // no test case for $orderby int?  see sortFunc.
  //
  // should count (and maybe distinct) map onto the agg pipeline?
  //
  // Expr_dateToString parse should not care about order of subdoc keys
  //
  // remove rowid from the sequences ?
  
  open System
  open System.IO
  
negative.code: //
  // insert empty timestamp, mongo fills it in, top level only
  //
  // explain
  //
  // regex tests
  