anchor.diff:  
   By default, the publication date is the date you created the Blog Post. You can force the publication date by adding the `:published_at:` attribute.
   
  -. :published_at: Example
  +.:published_at: Example
   [source, asciidoc]
   ----
   = Blog Title
  
positive.code: 
  If you want to add a cover image to your Blog Post, set the `hp-image` attribute.
  
  . :hp-image: Example
  [source, asciidoc]
  ----
  = Blog Title
  
negative.code: 
  The alternative title is used instead of the HTML file name generated by HubPress.
  
  .:hp-alt-title: Example
  [source, asciidoc]
  ----
  = 大千世界
  :hp-alt-title: My English Title
  ----
  
  ==== :compat-mode: to Control How Legacy AsciiDoc Markup Patterns
  
  Specify how code samples containing AsciiDoc markup patterns are processed. Some code samples may contain delimited asterix symbols that are interpreted like processing instructions by Asciidoctor. 
  
  If you find that your code samples are not displaying correctly, specify `:compat-mode: true` to disable processing in code blocks. 
  
  .:compat-mode: Example
  [source, asciidoc]
  ----
  = Blog Title
  :compat mode: true
  
      `egrep '\(\ *\)\ *\{' /var/log/nginx/*`
  ----
  
  If `:compat-mode: was not specified here, the code sample would render like this:
  
      egrep '\(\ \)\ *\{' /var/log/nginx/
  
  For more information about `:compat-mode:`, see the http://asciidoctor.org/docs/migration/#compat-mode[AsciiDoctor Migration Guide].
  
  === Adding Images
  
  