anchor.diff:  %%
   %% Note: keys and values are currently stored as strings but pattern
   %% matching and list:keysearch will be faster if standard values are
  -%% represented as atoms (but dont turn them all into atoms - as atoms
  +%% represented as atoms (but don't turn them all into atoms - as atoms
   %% aren't GCed)
   %%--------------------------------------------------------------------
   
  
positive.code: %%           Key = string()
  %%           Val = string()
  %%--------------------------------------------------------------------
  to_list(Norm) ->
      key_val_db:to_key_val(Norm#contact_param.pairs).
  
  
  
negative.code: -export([
  	 %% create contact_param
  	 to_norm/1,
  	 %% form contact_param to other format
  	 to_list/1,
  	 to_string/1,
  	 %% modify
  