anchor.diff:    </tbody>
   </table>
   
  -Bash’s built-in `set` command can be used to enable and disable options. To enable an option use the `-` argument, and to disable an option use the `+` argument.
  +Bash’s built-in `set` command can be used to enable and disable options. For example, `set -u` enables the `u` option, and `set +u` disables the `u` option. You can also set multiple options at once, for example `set -ue` enables both the `u` and `e` options.
   
  -For example, the following script enables the most commonly used options for build scripts:
  +The following example enables the most commonly used options for build scripts:
   
   ```bash
   #!/bin/bash
  
positive.code: 
  <section class="Docs__troubleshooting-note">
    <h1>Unbound variable errors</h1>
    <p>Note that while the <code>u</code> option is generally a good default to use for all build scripts, it can cause some tools like <a href="https://rvm.io">rvm</a> to fail with “unbound variable” errors. If you encounter errors, remove the <code>u</code> from the set command in your script.</p>
  </section>
  
  ## Capturing exit status
  
negative.code: 
  ```bash
  #!/bin/bash
  
  # Note that we don't enable the 'e' option, which would cause the script to 
  # immediately exit if 'run_tests' failed
  set -uo pipefail
  
  run_tests
  
  