-Oncetheheadropeofafishingnetispulledout,allitsmeshesopen.;alucidexpositionofanoutline,asharpdefinitionofcategories;Itisonlybytakingholdofthekeylinkthateverythingelsewillfallintoitsproperplace.;Oncethekeylinkisgrasped,everythingelsefallsintoplace.;Onlywhenthekeylinkisgrasped,willeverythingfallintoplace.;Whenthegeneralplanislaidout,thedetailsareeasytoarrange.;Whentheleadropeisraised,thefishnetopenswide.