anchor.diff:  ## Arguments
   
     <%- arguments.each do |arg| -%>
  -<%= argument_heading(arg) %>
  +<%= arg.name %>
   : <%= arg.desc %>
     <%- end -%>
  +
   <%- end -%>
   <%- if cmd.has_subcommands? -%>
   
  
positive.code: <%= key %>
  : <%= subcmd.desc %>
    <%- end -%>
  <%- end -%>
  <%- if not(options.empty?) -%>
  
  
negative.code:   <%- options.each do |opt| -%>
  <%= option_heading(opt) %>
  : <%= opt.desc %>
  
    <%- end -%>
  <%- end -%>
  
  