anchor.diff:  %%
   %% The .proto file is expected to be found in a directories specified by an
   %% `{i,directory()}' option. It is possible to specify `{i,directory()}'
  -%% several times, they will be search in the order specified.
  +%% several times, they will be searched in the order specified.
   %%
   %% The `{type_specs,boolean()}' option enables or disables `::Type()'
   %% annotations in the generated .hrl file. Default is currently
  
positive.code: %% directory as for the proto `File'.
  %%
  %% The `{o_erl,directory()}', `{o_hrl,directory()}', `{o_nif_cc,directory()}',
  %% options specify output directory for where to generate the `.erl'
  %% and `.hrl' files respectively, and for the NIF C++ file,
  %% if the `nif' option is specified. The `{o_erl,directory()}' option
  %% overrides any `{o,directory()}' option, and similarly for the
  
negative.code: %% messages referencing other messages, when compiling the generated
  %% files. The `type_specs' option is equivalent to `{type_specs,true}'.
  %%
  %% The `verify' option specifies whether or not to generate code
  %% that verifies, during encoding, that values are of correct type and
  %% within range.  The `verify' option can have the following values:
  %% <dl>
  %%    <dt>`always'</dt><dd>Generate code that unconditionally
  %%        verifies values.</dd>
  