local p = {}  function p.tracking(frame)  function isblank( val )  return (val == nil) or val:match('^[%s]*$')  end   local cats = ''  local args = frame:getParent().args   if (isblank(args['image']) and isblank(args['image_lake']) and isblank(args['image_ocean'])  and isblank(args['image_Ocean']) and isblank(args['image_bay']) ) then  cats = cats .. '[[Category:Wikipedia infobox body of water articles without image]]'  end   if isblank(args['coords']) and (isblank(args['latd']) or isblank(args['longd'])) then  cats = cats .. '[[Category:Wikipedia infobox body of water articles without coordinates]]'  end   if (args[1]) then  cats = cats .. '[[Category:Wikipedia infobox body of water articles needing maintenance]]'  end   local duplicate_parameters = 0  local unknown_parameters = 0   if (args['catchment_km2'] and args ['catchment']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['length_km'] and args['length']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['width_km'] and args['width']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['area_km2'] and args['area']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['depth_m'] and args['depth']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['max-depth_m'] and args['max-depth']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['volume_km3'] and args['volume']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['shore_km'] and args['shore']) then  duplicate_parameters = duplicate_parameters + 1  end  if (args['elevation_m'] and args['elevation']) then  duplicate_parameters = duplicate_parameters + 1  end  if ( (args['image'] and 1 or 0) + (args['image_lake'] and 1 or 0)  + (args['image_ocean'] and 1 or 0) + (args['image_Ocean'] and 1 or 0)  + (args['image_bay'] and 1 or 0) > 1 ) then  duplicate_parameters = duplicate_parameters + 1  end  if ( (args['name'] and 1 or 0) + (args['lake_name'] and 1 or 0)  + (args['ocean_name'] and 1 or 0) + (args['Ocean_name'] and 1 or 0)  + (args['bay_name'] and 1 or 0) > 1 ) then  duplicate_parameters = duplicate_parameters + 1  end  if (duplicate_parameters > 0) then  cats = cats .. '[[Category:Wikipedia infobox body of water articles using duplicate parameters]]'  end   local deprecated_parameters = 0  if (args['catchment'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['length'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['width'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['area'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['depth'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['max-depth'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['volume'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['shore'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end  if (args['elevation'] or ''):match('^[%s]*[0-9\.,]+[^%s]*$') then  deprecated_parameters = deprecated_parameters + 1  end   if isblank(args['shore_m']) then  else  unknown_parameters = unknown_parameters + 1  end  if isblank(args['latitude']) then  else  unknown_parameters = unknown_parameters + 1  end  if isblank(args['longitude']) then  else  unknown_parameters = unknown_parameters + 1  end  if isblank(args['code']) then  else  unknown_parameters = unknown_parameters + 1  end  if isblank(args['map_type']) then  else  unknown_parameters = unknown_parameters + 1  end  if isblank(args['elevation_reference']) then  else  unknown_parameters = unknown_parameters + 1  end  if (args['elevation_ref'] or ''):match('^[%s]*[A-Z%-]+[^%s]*$') then  unknown_parameters = unknown_parameters + 1  end   if (deprecated_parameters > 0) then  cats = cats .. '[[Category:Wikipedia infobox body of water articles using deprecated parameters]]'  end    if (unknown_parameters > 0) then  cats = cats .. '[[Category:Pages using infobox body of water articles using unsupported parameters]]'  end   return cats end  return p