.md-area
  .md-header.clearfix
    %ul.nav.nav-tabs
      %li.active
        = link_to '#md-write-holder', class: 'js-md-write-button', tabindex: '-1' do
          Write
      %li
        = link_to '#md-preview-holder', class: 'js-md-preview-button', tabindex: '-1' do
          Preview

    - if defined?(referenced_users) && referenced_users
      %span.referenced-users.pull-left.hide
        = icon('exclamation-triangle')
        You are about to add
        %strong
          %span.js-referenced-users-count 0
          people 
        to the discussion. Proceed with caution.

  %div
    .md-write-holder
      = yield
    .md.md-preview-holder.hide
      .js-md-preview{class: (preview_class if defined?(preview_class))}