anchor.diff:          if article.categoryEN != "Picture"
             .col-md-1
               p="Preview"
  -
  -
             +leftcolumn 
               .panel.panel-default
                 .panel-body(id="previewLEFT")
                   div
                     :verbatim
                       !{article["textHtml"+params.left_lang]}
  -
  -
             +rightcolumn
               .panel.panel-default
                 .panel-body.RL(id="previewRIGHT" class="RL-#{params.right_lang}")
  
positive.code:                   .panel-body.RL.hidden(class="RL-#{l}")
                      :verbatim
                        !{article["textHtml"+l]}
    .row
      .col-md-1
      +leftcolumn
  
negative.code:                     .panel-body.RL.hidden(class="RL-#{l}")
                        :verbatim
                          !{article["textHtml"+l]}
  
          .row
            h4="You can add a comment here:"
          .row
  