anchor.diff:  //
   // insert empty timestamp, mongo fills it in, top level only
   //
  -// datetime is signed.  allows dates before 1970.
  -//
   // explain
   //
   // regex tests
  
positive.code: // geo
  //
  // $text ? fts ?
  //
  // regex option m multiline
  //
  // $natural query modifier
  //
  
negative.code:     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *)
  
  // cmd_ prefix
  //
  // funk never gets called when the client abandons a cursor.  time it out.
  //
  // figure out why none of the parallel shell things work
  //
  