title: Summing columns in a row in all rows with Emacs org-mode
body: <p>I'm using Emacs <code>org-mode</code> to track times worked on various tasks. The last column in the table is the weekly sum for each task:</p>
  
  <pre><code>|------+-----+-----+-----+-----+-----+-------|
  | Task | Mon | Tue | Wed | Thu | Fri | Total |
  |------+-----+-----+-----+-----+-----+-------|
  | Foo  |   2 |   3 |   4 |   5 |   6 |    20 |
  | Bar  |   2 |   3 |   4 |   5 |   7 |    21 |
  #+TBLFM: @2$7=vsum($2..$6)::@3$7=vsum($2..$6)
  </code></pre>
  
  <p>Currently, I have to add a formula for each new row. Is there any way to customise the formula so that it calculates the sums regardless of how many rows there are?</p>