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: %% messages referencing other messages, when compiling the generated
  %% files. The `type_specs' option is equivalent to `{type_specs,true}'.
  %%
  %% The `verify' option whether or not to generate code for verifying
  %% that, during encoding, 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>
  
negative.code: %% input message binary. This may tie up the memory in the input
  %% message binary longer than necessary after it has been
  %% decoded. Copying the decoded bytes will avoid creating sub
  %% binaries, which will in turn make it possible to free the input message
  %% binary earlier. The `copy_bytes' option can have the following values:
  %% <dl>
  %%   <dt>`false'</dt><dd>Never copy bytes/(sub-)binaries.</dd>
  