title: difference between multi-line recipes with backslash and multi-line recipes with no backslash in makefile
body: <p>In the makefile, what is the difference between </p>
  
  <pre><code>targets : prerequisites
          recipe command \
          recipe command \
          ...
  </code></pre>
  
  <p>and </p>
  
  <pre><code>targets : prerequisites
          recipe command
          recipe-command
          ...
  </code></pre>