anchor.diff:      <p class='CodeRay'>
         <pre>
           <p class='code'>
  -          <span>proc sql;</span>
  +          <span class='command-entry'>proc sql;</span>
             <span class='command-prompt'>   connect to postgres as aact (</span>
             <% if user_signed_in? %>
  -          <span class='command-prompt'>      user=</span><span>"<%= current_user.username %>"</span>
  +          <span class='command-prompt'>      user=</span><span class='command-entry'>"<%= current_user.username %>"</span>
             <% else %>
             <span class='command-prompt'>      user=</span><span class='command-note'>(sign up/in to get a username)</span>
             <% end %>
  -          <span class='command-prompt'>      database=</span><span>"<%= ENV["DB_READONLY_DBNAME"] %>"</span>
  -          <span class='command-prompt'>      server=</span><span>"<%= ENV["DB_HOSTNAME"] %>"</span>
  -          <span class='command-prompt'>      port=</span><span>5432</span>
  +          <span class='command-prompt'>      database=</span><span class='command-entry'>"<%= ENV["DB_READONLY_DBNAME"] %>"</span>
  +          <span class='command-prompt'>      server=</span><span class='command-entry'>"<%= ENV["DB_HOSTNAME"] %>"</span>
  +          <span class='command-prompt'>      port=</span><span class='command-entry'>5432</span>
             <span class='command-prompt'>      );</span>
             <span class='command-prompt'>   title 'Number of studies'; </span>
             <span class='command-entry'>      select count(*) from connection to aact </span>
  
positive.code:           <span class='command-response'>* Consider extracting just a subset of records (e.g., 1000) first;</span>
            <span class='command-response'>* In the example below, the maximum length for character variables stored as ‘text’ type in the postgreSQL database is set at 1000;</span>
  
            <span class='command-prompt'>libname sasdata </span><span> "&lt;my file path&gt;" </span><span class='command-prompt'> ;</span><span class='command-response'>  /* folder for storing dataset */</span>
  
            <span class='command-prompt'>data sasdata.studies;</span>
            <span class='command-prompt'>   set cloud.studies </span>
            <span class='command-prompt'>      (dbmax_text=</span><span>1000</span><span class='command-prompt'> obs=</span><span>1000);</span>
            <span class='command-prompt'>   run;</span>
          </p>
        </pre>
  
negative.code:         <span class='command-prompt'>   cloud            </span><span class='command-response'> /* my libref  */</span>
          <span class='command-prompt'>   postgres         </span><span class='command-response'> /* postgres engine  */</span>
          <% if user_signed_in? %>
           <span class='command-prompt'>   user=</span><span class='command-entry'>"<%= current_user.username %>"     </span><span class='command-response'> /* supply your login credentials  */</span>
          <% else %>
          <span class='command-prompt'>   user=</span><span class='command-note'> (sign up/in to get a username) </span><span class='command-response'> /* supply your login credentials  */</span>
          <% end %>
          <span class='command-prompt'>   password=</span><span class='command-note'><i>"your AACT password" </i></span>
          <span class='command-prompt'>   database=</span><span class='command-entry'>"<%= ENV["AACT_PUBLIC_DATABASE_NAME"] %>"</span>
          <span class='command-prompt'>   server=</span><span class='command-entry'>"<%= ENV["AACT_PUBLIC_HOSTNAME"] %>"</span>
          <span class='command-prompt'>   port=</span><span class='command-entry'>5432</span>
          <span class='command-prompt'>   dbmax_text=</span><span class='command-entry'>32767 </span><span class='command-response'> /* sets the length of long text variables */</span>
          <span class='command-prompt'>   preserve_tab_names=</span><span  class='command-entry'>yes</span>
          <span class='command-prompt'>   access=</span><span class='command-entry'>readonly</span>
          <span class='command-prompt'>;</span>
        </p>
        </pre>
  