,------------------+--------+--------+----------.
| Task             | Start  | End    | Duration |
+------------------+--------+--------+----------+
| Prototype design | Jul 1  | Jul 22 | 22 days  |
+------------------+--------+--------+----------+
| Test prototype   | Jul 23 | Aug 1  | 10 days  |
+------------------+--------+--------+----------+
| Foo              | Jul 1  | Jul 20 | 20 days  |
`------------------+--------+--------+----------'