m-a-file-7 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> library(janitor) </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-data-from-a-file-8 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> students |&gt; clean_names() </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-data-from-a-file-9 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> students |&gt; clean