I'm working with the following code for a web page. On the page itself, a user is able to double-click a cell in a table (the `<td>` in the code below), and enter a value.

Is there an attribute, or a part, of this HTML that indicates that a user can interact with this `<td>` element? Or does this functionality come from another source (like Javascript)?

```
<tr class="ig_290640c5_r2" id="uwgBulkImportList_r_1" style="height: 20px;" alt="true Object="[object Object]">
  <td class="" id="uwgBulkImportList_rc_1_0" Object="[object Object]" unselectable="on" _hasMouse="false">
    <nobr>
      Text - Empty Text Node

```