   designations, and later occurrences of a given field will replace earlier appearances. ###
   R = {}
   for [ fieldhints, stuff..., ] in fieldhints_and_stuff
-    for [ fail, field_designation, ] from @_walk_f_field_designations_from_hints me, fieldhints
+    for [ fail, field_designation, ] from @_walk_fails_and_field_designations_from_hints me, fieldhints
       if fail? then _record me, fail
       else          R[ field_designation ]  = stuff
   yield [ field_designation, stuff..., ] for field_designation, stuff of R

#===========================================================================================================
# ITERATORS
#-----------------------------------------------------------------------------------------------------------
@_walk_f_field_designations_from_hints = ( me, fieldhints ) ->
  ### TAINT this will have to be changed to allow for named fields ###
  count           = 0
  fieldhints_set  = new Set ( _.trim() for _ in fieldhints.split ',' )

  unless value in [ 'top', 'bottom', 'center', 'spread', ]
    throw new Error "(MKTS/TABLE µ1876) expected one of 'top', 'bottom', 'center', 'spread' for mkts-table/fieldalignvertical, got #{rpr value}"
  #.........................................................................................................
  for [ fail, field_designation, ] from @_walk_fails_and_field_designations_from_hints me, fieldhints
    ### TAINT ad-hoc fail message production, use method ###
    if fail? then _record me, "#{fail} (#{jr {field_designation}})"
    else          me.valigns[ field_designation ] = value
