") </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-data-from-multiple-fil-2 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> list.files("data", pattern = "similar") </td>
  </tr>
  <tr>
   <td style="text-align:left;"> reading-data-from-multiple-fil-3 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> list.files("data", pattern = "similar", full.names = TRUE) </td>
  </tr>
  <tr>
   <td style="text-align:lef